Release v0.30.3

Remove unused apple-touch icons

.cirrus.yml

@@ -1,15 +1,15 @@
 freebsd_instance:
-  image_family: freebsd-13-0-snap
+  image_family: freebsd-14-0-snap
 
 task:
-  name: FreeBSD 13.0
+  name: FreeBSD
   env:
     IGNORE_OSVERSION: yes
   skip_notifications: true
   prerequisites_script:
     - pkg update -f
     - pkg upgrade -y
-    - pkg install -y pkgconf vips node npm
+    - pkg install -y devel/pkgconf graphics/vips www/node16 www/npm
   install_script:
     - npm install --build-from-source --unsafe-perm
   test_script:

.github/CONTRIBUTING.md

@@ -23,22 +23,22 @@ the feature you need.
 
 Thank you! To prevent the problem occurring again, please add unit tests that would have failed.
 
-Please select the `master` branch as the destination for your Pull Request so your fix can be included in the next minor release.
+Please select the `main` branch as the destination for your Pull Request so your fix can be included in the next minor release.
 
-Please squash your changes into a single commit using a command like `git rebase -i upstream/master`.
+Please squash your changes into a single commit using a command like `git rebase -i upstream/main`.
 
 To test C++ changes, you can compile the module using `npm install --build-from-source` and then run the tests using `npm test`.
 
 ## Submit a Pull Request with a new feature
 
-Please add JavaScript [unit tests](https://github.com/lovell/sharp/tree/master/test/unit) to cover your new feature.
+Please add JavaScript [unit tests](https://github.com/lovell/sharp/tree/main/test/unit) to cover your new feature.
 A test coverage report for the JavaScript code is generated in the `coverage/lcov-report` directory.
 
 Where possible, the functional tests use gradient-based perceptual hashes
 based on [dHash](http://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html)
 to compare expected vs actual images.
 
-You deserve to add your details to the [list of contributors](https://github.com/lovell/sharp/blob/master/package.json#L5).
+You deserve to add your details to the [list of contributors](https://github.com/lovell/sharp/blob/main/package.json#L5).
 
 Any change that modifies the existing public API should be added to the relevant work-in-progress branch for inclusion in the next major release.
 
@@ -93,5 +93,5 @@ Please feel free to ask any questions via a
 [new issue](https://github.com/lovell/sharp/issues/new).
 
 If you're unable to post details publicly, please
-[e-mail](https://github.com/lovell/sharp/blob/master/package.json#L5)
+[e-mail](https://github.com/lovell/sharp/blob/main/package.json#L5)
 for private, paid consulting.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -5,12 +5,24 @@ labels: enhancement
 
 ---
 
-What are you trying to achieve?
+## Feature request
 
-Have you searched for similar feature requests?
+### What are you trying to achieve?
 
-What would you expect the API to look like?
+<!-- Please provide context here. -->
 
-What alternatives have you considered?
+### When you searched for similar feature requests, what did you find that might be related?
 
-Is there a sample image that helps explain?
+<!-- Please demonstrate your research here. -->
+
+### What would you expect the API to look like?
+
+<!-- Please provide your suggestions here. -->
+
+### What alternatives have you considered?
+
+<!-- Please provide your ideas here. -->
+
+### Please provide sample image(s) that help explain this feature
+
+<!-- Please provide links to one or more images here. -->

.github/ISSUE_TEMPLATE/installation.md

@@ -5,18 +5,41 @@ labels: installation
 
 ---
 
-Did you see the [documentation relating to installation](https://sharp.pixelplumbing.com/install)?
+<!-- Please try to answer as many of these questions as possible. -->
 
-Have you ensured the architecture and platform of Node.js used for `npm install` is the same as the architecture and platform of Node.js used at runtime?
+## Possible install-time or require-time problem
 
-Are you using the latest version? Is the version currently in use as reported by `npm ls sharp` the same as the latest version as reported by `npm view sharp dist-tags.latest`?
+<!-- Please place an [x] in the box to confirm. -->
+
+- [ ] I have read the [documentation relating to installation](https://sharp.pixelplumbing.com/install).
+- [ ] I have ensured that the architecture and platform of Node.js used for `npm install` is the same as the architecture and platform of Node.js used at runtime.
+
+### Are you using the latest version of sharp?
+
+<!-- Please place an [x] in the box to confirm. -->
+
+- [ ] I am using the latest version of `sharp` as reported by `npm view sharp dist-tags.latest`.
+
+If you cannot confirm this, please upgrade to the latest version and try again before opening an issue.
+
+If you are using another package which depends on a version of `sharp` that is not the latest, please open an issue against that package instead.
+
+### Is this a problem with filesystem permissions?
 
 If you are using npm v6 or earlier and installing as a `root` or `sudo` user, have you tried with the `npm install --unsafe-perm` flag?
 
-If you are using npm v7, does the user running `npm install` own the directory it is run in?
+If you are using npm v7 or later, does the user running `npm install` own the directory it is run in?
 
 If you are using the `ignore-scripts` feature of `npm`, have you tried with the `npm install --ignore-scripts=false` flag?
 
-What is the complete output of running `npm install --verbose sharp`? Have you checked this output for useful error messages?
+### What is the complete output of running `npm install --verbose sharp`?
 
-What is the output of running `npx envinfo --binaries --system`?
+<details>
+
+<!-- Please provide output of `npm install --verbose sharp` here. -->
+
+</details>
+
+### What is the output of running `npx envinfo --binaries --system --npmPackages=sharp --npmGlobalPackages=sharp`?
+
+<!-- Please provide output of `npx envinfo --binaries --system --npmPackages=sharp --npmGlobalPackages=sharp` here. -->

.github/ISSUE_TEMPLATE/possible-bug.md

@@ -7,14 +7,43 @@ labels: triage
 
 <!-- If this issue relates to installation, please use https://github.com/lovell/sharp/issues/new?labels=installation&template=installation.md instead. -->
 
-Are you using the latest version? Is the version currently in use as reported by `npm ls sharp` the same as the latest version as reported by `npm view sharp dist-tags.latest`?
+## Possible bug
 
-What are the steps to reproduce?
+### Is this a possible bug in a feature of sharp, unrelated to installation?
 
-What is the expected behaviour?
+<!-- Please place an [x] in the box to confirm. -->
 
-Are you able to provide a minimal, standalone code sample, without other dependencies, that demonstrates this problem?
+- [ ] Running `npm install sharp` completes without error.
+- [ ] Running `node -e "require('sharp')"` completes without error.
 
-Are you able to provide a sample image that helps explain the problem?
+If you cannot confirm both of these, please open an [installation issue](https://github.com/lovell/sharp/issues/new?labels=installation&template=installation.md) instead.
 
-What is the output of running `npx envinfo --binaries --system`?
+### Are you using the latest version of sharp?
+
+<!-- Please place an [x] in the box to confirm. -->
+
+- [ ] I am using the latest version of `sharp` as reported by `npm view sharp dist-tags.latest`.
+
+If you cannot confirm this, please upgrade to the latest version and try again before opening an issue.
+
+If you are using another package which depends on a version of `sharp` that is not the latest, please open an issue against that package instead.
+
+### What is the output of running `npx envinfo --binaries --system --npmPackages=sharp --npmGlobalPackages=sharp`?
+
+<!-- Please provide output of the above command here. -->
+
+### What are the steps to reproduce?
+
+<!-- Please enter steps to reproduce here. -->
+
+### What is the expected behaviour?
+
+<!-- Please enter the expected behaviour here. -->
+
+### Please provide a minimal, standalone code sample, without other dependencies, that demonstrates this problem
+
+<!-- Please provide either formatted code or a link to a repo/gist that allows someone else to reproduce here. -->
+
+### Please provide sample image(s) that help explain this problem
+
+<!-- Please provide links to one or more images here. -->

.github/ISSUE_TEMPLATE/question.md

@@ -7,10 +7,20 @@ labels: question
 
 <!-- If this issue relates to installation, please use https://github.com/lovell/sharp/issues/new?labels=installation&template=installation.md instead. -->
 
-What are you trying to achieve?
+## Question about an existing feature
 
-Have you searched for similar questions?
+### What are you trying to achieve?
 
-Are you able to provide a minimal, standalone code sample that demonstrates this question?
+<!-- Please provide context here. -->
 
-Are you able to provide a sample image that helps explain the question?
+### When you searched for similar issues, what did you find that might be related?
+
+<!-- Please demonstrate your research here. -->
+
+### Please provide a minimal, standalone code sample, without other dependencies, that demonstrates this question
+
+<!-- Please provide either formatted code or a link to a repo/gist that helps someone else understand here. -->
+
+### Please provide sample image(s) that help explain this question
+
+<!-- Please provide links to one or more images here. -->

.github/workflows/ci.yml

@@ -33,17 +33,33 @@ jobs:
           - os: macos-10.15
             nodejs_version: 12
             prebuild: true
+            nodejs_arch: x64
           - os: macos-10.15
             nodejs_version: 14
+            nodejs_arch: x64
           - os: macos-10.15
             nodejs_version: 16
+            nodejs_arch: x64
           - os: windows-2019
             nodejs_version: 12
+            nodejs_arch: x86
             prebuild: true
           - os: windows-2019
             nodejs_version: 14
+            nodejs_arch: x86
           - os: windows-2019
             nodejs_version: 16
+            nodejs_arch: x86
+          - os: windows-2019
+            nodejs_version: 12
+            nodejs_arch: x64
+            prebuild: true
+          - os: windows-2019
+            nodejs_version: 14
+            nodejs_arch: x64
+          - os: windows-2019
+            nodejs_version: 16
+            nodejs_arch: x64
     steps:
       - name: Dependencies (Linux glibc)
         if: contains(matrix.container, 'centos')
@@ -57,9 +73,10 @@ jobs:
         run: apk add build-base git python3 --update-cache
       - name: Dependencies (macOS, Windows)
         if: contains(matrix.os, 'macos') || contains(matrix.os, 'windows')
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.nodejs_version }}
+          architecture: ${{ matrix.nodejs_arch }}
       - name: Checkout
         uses: actions/checkout@v2
       - name: Fix working directory ownership

README.md

@@ -1,6 +1,6 @@
 # sharp
 
-<img src="https://cdn.jsdelivr.net/gh/lovell/sharp@master/docs/image/sharp-logo.svg" width="160" height="160" alt="sharp logo" align="right">
+<img src="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo.svg" width="160" height="160" alt="sharp logo" align="right">
 
 The typical use case for this high speed Node.js module
 is to convert large images in common formats to
@@ -95,10 +95,10 @@ readableStream
 
 ## Contributing
 
-A [guide for contributors](https://github.com/lovell/sharp/blob/master/.github/CONTRIBUTING.md)
+A [guide for contributors](https://github.com/lovell/sharp/blob/main/.github/CONTRIBUTING.md)
 covers reporting bugs, requesting features and submitting code changes.
 
-[![Test Coverage](https://coveralls.io/repos/lovell/sharp/badge.svg?branch=master)](https://coveralls.io/r/lovell/sharp?branch=master)
+[![Test Coverage](https://coveralls.io/repos/lovell/sharp/badge.svg?branch=main)](https://coveralls.io/r/lovell/sharp?branch=main)
 [![Node-API v5](https://img.shields.io/badge/Node--API-v5-green.svg)](https://nodejs.org/dist/latest/docs/api/n-api.html#n_api_n_api_version_matrix)
 
 ## Licensing

appveyor.yml

@@ -1,17 +0,0 @@
-os: Visual Studio 2019
-version: "{build}"
-build: off
-platform: x86
-environment:
-  matrix:
-  - nodejs_version: "12"
-    prebuild: true
-  - nodejs_version: "14"
-  - nodejs_version: "16"
-install:
-  - ps: Update-NodeJsInstallation (Get-NodeJsLatestBuild $env:nodejs_version)
-  - npm install --build-from-source
-test_script:
-  - npm test
-on_success:
-  - if [%prebuild%] == [true] if [%APPVEYOR_REPO_TAG%] == [true] npx prebuild --runtime napi --target 5

binding.gyp

@@ -39,7 +39,6 @@
               'VCCLCompilerTool': {
                 'ExceptionHandling': 1,
                 'Optimization': 1,
-                'RuntimeLibrary': '2', # /MD
                 'WholeProgramOptimization': 'true'
               },
               'VCLibrarianTool': {
@@ -206,7 +205,6 @@
               'VCCLCompilerTool': {
                 'ExceptionHandling': 1,
                 'Optimization': 1,
-                'RuntimeLibrary': '2', # /MD
                 'WholeProgramOptimization': 'true'
               },
               'VCLibrarianTool': {

docs/README.md

@@ -1,6 +1,6 @@
 # sharp
 
-<img src="https://cdn.jsdelivr.net/gh/lovell/sharp@master/docs/image/sharp-logo.svg" width="160" height="160" alt="sharp logo" align="right">
+<img src="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo.svg" width="160" height="160" alt="sharp logo" align="right">
 
 The typical use case for this high speed Node.js module
 is to convert large images in common formats to
@@ -65,7 +65,7 @@ as [pngcrush](https://pmt.sourceforge.io/pngcrush/).
 
 ### Contributing
 
-A [guide for contributors](https://github.com/lovell/sharp/blob/master/.github/CONTRIBUTING.md)
+A [guide for contributors](https://github.com/lovell/sharp/blob/main/.github/CONTRIBUTING.md)
 covers reporting bugs, requesting features and submitting code changes.
 
 ### Licensing

docs/api-colour.md

@@ -9,7 +9,13 @@ An alpha channel may be present and will be unchanged by the operation.
 
 *   `rgb` **([string][1] | [Object][2])** parsed by the [color][3] module to extract chroma values.
 
-<!---->
+### Examples
+
+```javascript
+const output = await sharp(input)
+  .tint({ r: 255, g: 240, b: 16 })
+  .toBuffer();
+```
 
 *   Throws **[Error][4]** Invalid parameter
 
@@ -28,6 +34,12 @@ An alpha channel may be present, and will be unchanged by the operation.
 
 *   `greyscale` **[Boolean][5]**  (optional, default `true`)
 
+### Examples
+
+```javascript
+const output = await sharp(input).greyscale().toBuffer();
+```
+
 Returns **Sharp** 
 
 ## grayscale

docs/api-composite.md

@@ -41,11 +41,29 @@ and [https://www.cairographics.org/operators/][2]
         *   `images[].raw.width` **[Number][7]?** 
         *   `images[].raw.height` **[Number][7]?** 
         *   `images[].raw.channels` **[Number][7]?** 
+    *   `images[].animated` **[boolean][9]** Set to `true` to read all frames/pages of an animated image. (optional, default `false`)
     *   `images[].failOnError` **[boolean][9]** @see [constructor parameters][10] (optional, default `true`)
     *   `images[].limitInputPixels` **([number][7] | [boolean][9])** @see [constructor parameters][10] (optional, default `268402689`)
 
 ### Examples
 
+```javascript
+await sharp(background)
+  .composite([
+    { input: layer1, gravity: 'northwest' },
+    { input: layer2, gravity: 'southeast' },
+  ])
+  .toFile('combined.png');
+```
+
+```javascript
+const output = await sharp('input.gif', { animated: true })
+  .composite([
+    { input: 'overlay.png', tile: true, blend: 'saturate' }
+  ])
+  .toBuffer();
+```
+
 ```javascript
 sharp('input.png')
   .rotate(180)

docs/api-input.md

@@ -11,8 +11,8 @@ A `Promise` is returned when `callback` is not provided.
 
 *   `format`: Name of decoder used to decompress image data e.g. `jpeg`, `png`, `webp`, `gif`, `svg`
 *   `size`: Total size of image in bytes, for Stream and Buffer input only
-*   `width`: Number of pixels wide (EXIF orientation is not taken into consideration)
-*   `height`: Number of pixels high (EXIF orientation is not taken into consideration)
+*   `width`: Number of pixels wide (EXIF orientation is not taken into consideration, see example below)
+*   `height`: Number of pixels high (EXIF orientation is not taken into consideration, see example below)
 *   `space`: Name of colour space interpretation e.g. `srgb`, `rgb`, `cmyk`, `lab`, `b-w` [...][1]
 *   `channels`: Number of bands e.g. `3` for sRGB, `4` for CMYK
 *   `depth`: Name of pixel depth format e.g. `uchar`, `char`, `ushort`, `float` [...][2]
@@ -63,6 +63,18 @@ image
   });
 ```
 
+```javascript
+// Based on EXIF rotation metadata, get the right-side-up width and height:
+
+const size = getNormalSize(await sharp(input).metadata());
+
+function getNormalSize({ width, height, orientation }) {
+  return orientation || 0 >= 5
+    ? { width: height, height: width }
+    : { width, height };
+}
+```
+
 Returns **([Promise][5]<[Object][6]> | Sharp)** 
 
 ## stats
@@ -82,9 +94,9 @@ A `Promise` is returned when `callback` is not provided.
     *   `maxX` (x-coordinate of one of the pixel where the maximum lies)
     *   `maxY` (y-coordinate of one of the pixel where the maximum lies)
 *   `isOpaque`: Is the image fully opaque? Will be `true` if the image has no alpha channel or if every pixel is fully opaque.
-*   `entropy`: Histogram-based estimation of greyscale entropy, discarding alpha channel if any (experimental)
-*   `sharpness`: Estimation of greyscale sharpness based on the standard deviation of a Laplacian convolution, discarding alpha channel if any (experimental)
-*   `dominant`: Object containing most dominant sRGB colour based on a 4096-bin 3D histogram (experimental)
+*   `entropy`: Histogram-based estimation of greyscale entropy, discarding alpha channel if any.
+*   `sharpness`: Estimation of greyscale sharpness based on the standard deviation of a Laplacian convolution, discarding alpha channel if any.
+*   `dominant`: Object containing most dominant sRGB colour based on a 4096-bin 3D histogram.
 
 **Note**: Statistics are derived from the original input image. Any operations performed on the image must first be
 written to a buffer in order to run `stats` on the result (see third example).

docs/api-operation.md

@@ -53,6 +53,12 @@ The use of `flip` implies the removal of the EXIF `Orientation` tag, if any.
 
 *   `flip` **[Boolean][6]**  (optional, default `true`)
 
+### Examples
+
+```javascript
+const output = await sharp(input).flip().toBuffer();
+```
+
 Returns **Sharp** 
 
 ## flop
@@ -64,6 +70,12 @@ The use of `flop` implies the removal of the EXIF `Orientation` tag, if any.
 
 *   `flop` **[Boolean][6]**  (optional, default `true`)
 
+### Examples
+
+```javascript
+const output = await sharp(input).flop().toBuffer();
+```
+
 Returns **Sharp** 
 
 ## affine
@@ -129,13 +141,43 @@ When used without parameters, performs a fast, mild sharpen of the output image.
 When a `sigma` is provided, performs a slower, more accurate sharpen of the L channel in the LAB colour space.
 Separate control over the level of sharpening in "flat" and "jagged" areas is available.
 
+See [libvips sharpen][8] operation.
+
 ### Parameters
 
-*   `sigma` **[number][1]?** the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`.
-*   `flat` **[number][1]** the level of sharpening to apply to "flat" areas. (optional, default `1.0`)
-*   `jagged` **[number][1]** the level of sharpening to apply to "jagged" areas. (optional, default `2.0`)
+*   `options` **([Object][2] | [number][1])?** if present, is an Object with attributes or (deprecated) a number for `options.sigma`.
 
-<!---->
+    *   `options.sigma` **[number][1]?** the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`.
+    *   `options.m1` **[number][1]** the level of sharpening to apply to "flat" areas. (optional, default `1.0`)
+    *   `options.m2` **[number][1]** the level of sharpening to apply to "jagged" areas. (optional, default `2.0`)
+    *   `options.x1` **[number][1]** threshold between "flat" and "jagged" (optional, default `2.0`)
+    *   `options.y2` **[number][1]** maximum amount of brightening. (optional, default `10.0`)
+    *   `options.y3` **[number][1]** maximum amount of darkening. (optional, default `20.0`)
+*   `flat` **[number][1]?** (deprecated) see `options.m1`.
+*   `jagged` **[number][1]?** (deprecated) see `options.m2`.
+
+### Examples
+
+```javascript
+const data = await sharp(input).sharpen().toBuffer();
+```
+
+```javascript
+const data = await sharp(input).sharpen({ sigma: 2 }).toBuffer();
+```
+
+```javascript
+const data = await sharp(input)
+  .sharpen({
+    sigma: 2,
+    m1: 0
+    m2: 3,
+    x1: 3,
+    y2: 15,
+    y3: 15,
+  })
+  .toBuffer();
+```
 
 *   Throws **[Error][5]** Invalid parameters
 
@@ -150,7 +192,15 @@ When used without parameters the default window is 3x3.
 
 *   `size` **[number][1]** square mask size: size x size (optional, default `3`)
 
-<!---->
+### Examples
+
+```javascript
+const output = await sharp(input).median().toBuffer();
+```
+
+```javascript
+const output = await sharp(input).median(5).toBuffer();
+```
 
 *   Throws **[Error][5]** Invalid parameters
 
@@ -190,7 +240,7 @@ Returns **Sharp**
 
 Merge alpha transparency channel, if any, with a background, then remove the alpha channel.
 
-See also [removeAlpha][8].
+See also [removeAlpha][9].
 
 ### Parameters
 
@@ -249,6 +299,12 @@ Enhance output image contrast by stretching its luminance to cover the full dyna
 
 *   `normalise` **[Boolean][6]**  (optional, default `true`)
 
+### Examples
+
+```javascript
+const output = await sharp(input).normalise().toBuffer();
+```
+
 Returns **Sharp** 
 
 ## normalize
@@ -259,12 +315,18 @@ Alternative spelling of normalise.
 
 *   `normalize` **[Boolean][6]**  (optional, default `true`)
 
+### Examples
+
+```javascript
+const output = await sharp(input).normalize().toBuffer();
+```
+
 Returns **Sharp** 
 
 ## clahe
 
 Perform contrast limiting adaptive histogram equalization
-[CLAHE][9].
+[CLAHE][10].
 
 This will, in general, enhance the clarity of the image by bringing out darker details.
 
@@ -278,7 +340,16 @@ This will, in general, enhance the clarity of the image by bringing out darker d
         cumulative histogram. A value of 0 disables contrast limiting. Valid values
         are integers in the range 0-100 (inclusive) (optional, default `3`)
 
-<!---->
+### Examples
+
+```javascript
+const output = await sharp(input)
+  .clahe({
+    width: 3,
+    height: 3,
+  })
+  .toBuffer();
+```
 
 *   Throws **[Error][5]** Invalid parameters
 
@@ -349,7 +420,7 @@ the selected bitwise boolean `operation` between the corresponding pixels of the
 
 ### Parameters
 
-*   `operand` **([Buffer][10] | [string][3])** Buffer containing image data or string containing the path to an image file.
+*   `operand` **([Buffer][11] | [string][3])** Buffer containing image data or string containing the path to an image file.
 *   `operator` **[string][3]** one of `and`, `or` or `eor` to perform that bitwise operation, like the C logic operators `&`, `|` and `^` respectively.
 *   `options` **[Object][2]?** 
 
@@ -430,28 +501,41 @@ brightness is multiplicative whereas lightness is additive.
 ### Examples
 
 ```javascript
-sharp(input)
+// increase brightness by a factor of 2
+const output = await sharp(input)
   .modulate({
-    brightness: 2 // increase brightness by a factor of 2
-  });
+    brightness: 2
+  })
+  .toBuffer();
+```
 
-sharp(input)
+```javascript
+// hue-rotate by 180 degrees
+const output = await sharp(input)
   .modulate({
-    hue: 180 // hue-rotate by 180 degrees
-  });
+    hue: 180
+  })
+  .toBuffer();
+```
 
-sharp(input)
+```javascript
+// increase lightness by +50
+const output = await sharp(input)
   .modulate({
-    lightness: 50 // increase lightness by +50
-  });
+    lightness: 50
+  })
+  .toBuffer();
+```
 
+```javascript
 // decreate brightness and saturation while also hue-rotating by 90 degrees
-sharp(input)
+const output = await sharp(input)
   .modulate({
     brightness: 0.5,
     saturation: 0.5,
-    hue: 90
-  });
+    hue: 90,
+  })
+  .toBuffer();
 ```
 
 Returns **Sharp** 
@@ -474,8 +558,10 @@ Returns **Sharp**
 
 [7]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array
 
-[8]: /api-channel#removealpha
+[8]: https://www.libvips.org/API/current/libvips-convolution.html#vips-sharpen
 
-[9]: https://en.wikipedia.org/wiki/Adaptive_histogram_equalization#Contrast_Limited_AHE
+[9]: /api-channel#removealpha
 
-[10]: https://nodejs.org/api/buffer.html
+[10]: https://en.wikipedia.org/wiki/Adaptive_histogram_equalization#Contrast_Limited_AHE
+
+[11]: https://nodejs.org/api/buffer.html

docs/api-utility.md

@@ -188,13 +188,13 @@ Returns **[boolean][10]**
 
 [5]: http://en.wikipedia.org/wiki/Bicubic_interpolation
 
-[6]: https://github.com/jcupitt/libvips/blob/master/libvips/resample/lbb.cpp#L100
+[6]: https://github.com/libvips/libvips/blob/master/libvips/resample/lbb.cpp#L100
 
 [7]: http://en.wikipedia.org/wiki/Acutance
 
 [8]: http://eprints.soton.ac.uk/268086/
 
-[9]: https://github.com/jcupitt/libvips/blob/master/libvips/resample/vsqbs.cpp#L48
+[9]: https://github.com/libvips/libvips/blob/master/libvips/resample/vsqbs.cpp#L48
 
 [10]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean
 

docs/changelog.md

@@ -4,6 +4,49 @@
 
 Requires libvips v8.12.2
 
+### v0.30.3 - 14th March 2022
+
+* Allow `sharpen` options to be provided more consistently as an Object.
+  [#2561](https://github.com/lovell/sharp/issues/2561)
+
+* Expose `x1`, `y2` and `y3` parameters of `sharpen` operation.
+  [#2935](https://github.com/lovell/sharp/issues/2935)
+
+* Prevent double unpremultiply with some composite blend modes (regression in 0.30.2).
+  [#3118](https://github.com/lovell/sharp/issues/3118)
+
+### v0.30.2 - 2nd March 2022
+
+* Improve performance and accuracy when compositing multiple images.
+  [#2286](https://github.com/lovell/sharp/issues/2286)
+
+* Expand pkgconfig search path for wider BSD support.
+  [#3106](https://github.com/lovell/sharp/issues/3106)
+
+* Ensure Windows C++ runtime is linked statically (regression in 0.30.0).
+  [#3110](https://github.com/lovell/sharp/pull/3110)
+  [@kleisauke](https://github.com/kleisauke)
+
+* Temporarily ignore greyscale ICC profiles to workaround lcms bug.
+  [#3112](https://github.com/lovell/sharp/issues/3112)
+
+### v0.30.1 - 9th February 2022
+
+* Allow use of `toBuffer` and `toFile` on the same instance.
+  [#3044](https://github.com/lovell/sharp/issues/3044)
+
+* Skip shrink-on-load for known libjpeg rounding errors.
+  [#3066](https://github.com/lovell/sharp/issues/3066)
+  [@kleisauke](https://github.com/kleisauke)
+
+* Ensure withoutReduction does not interfere with contain/crop/embed.
+  [#3081](https://github.com/lovell/sharp/pull/3081)
+  [@kleisauke](https://github.com/kleisauke)
+
+* Ensure affine interpolator is correctly finalised.
+  [#3083](https://github.com/lovell/sharp/pull/3083)
+  [@kleisauke](https://github.com/kleisauke)
+
 ### v0.30.0 - 1st February 2022
 
 * Add support for GIF output to prebuilt binaries.

docs/index.html

@@ -6,19 +6,13 @@
   <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
   <meta name="description" content="Resize large images in common formats to smaller, web-friendly JPEG, PNG, WebP, GIF and AVIF images of varying dimensions">
   <meta http-equiv="Content-Security-Policy" content="default-src 'self'; object-src 'none'; style-src 'unsafe-inline';
-    img-src 'unsafe-inline' data: https://pixel.plumbing/px/ https://cdn.jsdelivr.net/gh/lovell/ https://www.google-analytics.com;
+    img-src 'unsafe-inline' data: https://cdn.jsdelivr.net/gh/lovell/ https://www.google-analytics.com;
     connect-src 'self' https://www.google-analytics.com;
     script-src 'self' 'unsafe-inline' 'unsafe-eval'
       https://www.google-analytics.com/analytics.js;">
-  <link rel="icon" type="image/png" href="https://pixel.plumbing/px/32x32/sharp-logo.svg">
-  <link rel="apple-touch-icon-precomposed" sizes="152x152" href="https://pixel.plumbing/px/152x152/sharp-logo.svg">
-  <link rel="apple-touch-icon-precomposed" sizes="144x144" href="https://pixel.plumbing/px/144x144/sharp-logo.svg">
-  <link rel="apple-touch-icon-precomposed" sizes="120x120" href="https://pixel.plumbing/px/120x120/sharp-logo.svg">
-  <link rel="apple-touch-icon-precomposed" sizes="114x114" href="https://pixel.plumbing/px/114x114/sharp-logo.svg">
-  <link rel="apple-touch-icon-precomposed" sizes="72x72" href="https://pixel.plumbing/px/72x72/sharp-logo.svg">
-  <link rel="apple-touch-icon-precomposed" href="https://pixel.plumbing/px/57x57/sharp-logo.svg">
+  <link rel="icon" type="image/svg+xml" href="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo.svg">
+  <link rel="icon" type="image/png" sizes="32x32" href="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo.png">
   <link rel="author" href="/humans.txt" type="text/plain">
-  <link rel="dns-prefetch" href="https://pixel.plumbing">
   <link rel="dns-prefetch" href="https://www.google-analytics.com">
   <script type="application/ld+json">
   {
@@ -124,7 +118,7 @@
       router: { mode: 'history' },
       logo: '<div style="display:flex;align-items:center">'
         + '<strong>sharp</strong> '
-        + '<img src="https://pixel.plumbing/px/16x16/sharp-logo.svg" style="padding:8px" alt="#"> '
+        + '<img src="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo.svg" style="padding:8px" width="32" height="32" alt="#"> '
         + '<span style="opacity:0.8;white-space:pre" class="shorten-strapline">High performance </span> '
         + '<span style="opacity:0.8">Node.js image processing</span> '
         + '</div>',

docs/install.md

@@ -213,9 +213,11 @@ SHARP_IGNORE_GLOBAL_LIBVIPS=1 npm install --arch=x64 --platform=linux sharp
 To get the best performance select the largest memory available.
 A 1536 MB function provides ~12x more CPU time than a 128 MB function.
 
-## Webpack
+## Bundlers
 
-Ensure sharp is added to the
+### webpack
+
+Ensure sharp is excluded from bundling via the
 [externals](https://webpack.js.org/configuration/externals/)
 configuration.
 
@@ -225,6 +227,25 @@ externals: {
 }
 ```
 
+### esbuild
+
+Ensure sharp is excluded from bundling via the
+[external](https://esbuild.github.io/api/#external)
+configuration.
+
+```js
+buildSync({
+  entryPoints: ['app.js'],
+  bundle: true,
+  platform: 'node',
+  external: ['sharp'],
+})
+```
+
+```sh
+esbuild app.js --bundle --platform=node --external:sharp
+```
+
 ## Worker threads
 
 The main thread must call `require('sharp')`

lib/colour.js

@@ -19,6 +19,11 @@ const colourspace = {
  * Tint the image using the provided chroma while preserving the image luminance.
  * An alpha channel may be present and will be unchanged by the operation.
  *
+ * @example
+ * const output = await sharp(input)
+ *   .tint({ r: 255, g: 240, b: 16 })
+ *   .toBuffer();
+ *
  * @param {string|Object} rgb - parsed by the [color](https://www.npmjs.org/package/color) module to extract chroma values.
  * @returns {Sharp}
  * @throws {Error} Invalid parameter
@@ -37,6 +42,10 @@ function tint (rgb) {
  * This may be overridden by other sharp operations such as `toColourspace('b-w')`,
  * which will produce an output image containing one color channel.
  * An alpha channel may be present, and will be unchanged by the operation.
+ *
+ * @example
+ * const output = await sharp(input).greyscale().toBuffer();
+ *
  * @param {Boolean} [greyscale=true]
  * @returns {Sharp}
  */

lib/composite.js

@@ -56,6 +56,21 @@ const blend = {
  * @since 0.22.0
  *
  * @example
+ * await sharp(background)
+ *   .composite([
+ *     { input: layer1, gravity: 'northwest' },
+ *     { input: layer2, gravity: 'southeast' },
+ *   ])
+ *   .toFile('combined.png');
+ *
+ * @example
+ * const output = await sharp('input.gif', { animated: true })
+ *   .composite([
+ *     { input: 'overlay.png', tile: true, blend: 'saturate' }
+ *   ])
+ *   .toBuffer();
+ *
+ * @example
  * sharp('input.png')
  *   .rotate(180)
  *   .resize(300)
@@ -89,6 +104,7 @@ const blend = {
  * @param {Number} [images[].raw.width]
  * @param {Number} [images[].raw.height]
  * @param {Number} [images[].raw.channels]
+ * @param {boolean} [images[].animated=false] - Set to `true` to read all frames/pages of an animated image.
  * @param {boolean} [images[].failOnError=true] - @see {@link /api-constructor#parameters|constructor parameters}
  * @param {number|boolean} [images[].limitInputPixels=268402689] - @see {@link /api-constructor#parameters|constructor parameters}
  * @returns {Sharp}
@@ -162,7 +178,6 @@ function composite (images) {
         throw is.invalidParameterError('premultiplied', 'boolean', image.premultiplied);
       }
     }
-
     return composite;
   });
   return this;

lib/constructor.js

@@ -186,8 +186,11 @@ const Sharp = function (input, options) {
     medianSize: 0,
     blurSigma: 0,
     sharpenSigma: 0,
-    sharpenFlat: 1,
-    sharpenJagged: 2,
+    sharpenM1: 1,
+    sharpenM2: 2,
+    sharpenX1: 2,
+    sharpenY2: 10,
+    sharpenY3: 20,
     threshold: 0,
     thresholdGrayscale: true,
     trimThreshold: 0,

lib/input.js

@@ -299,8 +299,8 @@ function _isStreamInput () {
  *
  * - `format`: Name of decoder used to decompress image data e.g. `jpeg`, `png`, `webp`, `gif`, `svg`
  * - `size`: Total size of image in bytes, for Stream and Buffer input only
- * - `width`: Number of pixels wide (EXIF orientation is not taken into consideration)
- * - `height`: Number of pixels high (EXIF orientation is not taken into consideration)
+ * - `width`: Number of pixels wide (EXIF orientation is not taken into consideration, see example below)
+ * - `height`: Number of pixels high (EXIF orientation is not taken into consideration, see example below)
  * - `space`: Name of colour space interpretation e.g. `srgb`, `rgb`, `cmyk`, `lab`, `b-w` [...](https://libvips.github.io/libvips/API/current/VipsImage.html#VipsInterpretation)
  * - `channels`: Number of bands e.g. `3` for sRGB, `4` for CMYK
  * - `depth`: Name of pixel depth format e.g. `uchar`, `char`, `ushort`, `float` [...](https://libvips.github.io/libvips/API/current/VipsImage.html#VipsBandFormat)
@@ -343,6 +343,17 @@ function _isStreamInput () {
  *     // data contains a WebP image half the width and height of the original JPEG
  *   });
  *
+ * @example
+ * // Based on EXIF rotation metadata, get the right-side-up width and height:
+ *
+ * const size = getNormalSize(await sharp(input).metadata());
+ *
+ * function getNormalSize({ width, height, orientation }) {
+ *   return orientation || 0 >= 5
+ *     ? { width: height, height: width }
+ *     : { width, height };
+ * }
+ *
  * @param {Function} [callback] - called with the arguments `(err, metadata)`
  * @returns {Promise<Object>|Sharp}
  */
@@ -401,9 +412,9 @@ function metadata (callback) {
  *     - `maxX` (x-coordinate of one of the pixel where the maximum lies)
  *     - `maxY` (y-coordinate of one of the pixel where the maximum lies)
  * - `isOpaque`: Is the image fully opaque? Will be `true` if the image has no alpha channel or if every pixel is fully opaque.
- * - `entropy`: Histogram-based estimation of greyscale entropy, discarding alpha channel if any (experimental)
- * - `sharpness`: Estimation of greyscale sharpness based on the standard deviation of a Laplacian convolution, discarding alpha channel if any (experimental)
- * - `dominant`: Object containing most dominant sRGB colour based on a 4096-bin 3D histogram (experimental)
+ * - `entropy`: Histogram-based estimation of greyscale entropy, discarding alpha channel if any.
+ * - `sharpness`: Estimation of greyscale sharpness based on the standard deviation of a Laplacian convolution, discarding alpha channel if any.
+ * - `dominant`: Object containing most dominant sRGB colour based on a 4096-bin 3D histogram.
  *
  * **Note**: Statistics are derived from the original input image. Any operations performed on the image must first be
  * written to a buffer in order to run `stats` on the result (see third example).

lib/libvips.js

@@ -86,9 +86,14 @@ const removeVendoredLibvips = function () {
 const pkgConfigPath = function () {
   if (process.platform !== 'win32') {
     const brewPkgConfigPath = spawnSync('which brew >/dev/null 2>&1 && eval $(brew --env) && echo $PKG_CONFIG_LIBDIR', spawnSyncOptions).stdout || '';
-    return [brewPkgConfigPath.trim(), env.PKG_CONFIG_PATH, '/usr/local/lib/pkgconfig', '/usr/lib/pkgconfig']
-      .filter(function (p) { return !!p; })
-      .join(':');
+    return [
+      brewPkgConfigPath.trim(),
+      env.PKG_CONFIG_PATH,
+      '/usr/local/lib/pkgconfig',
+      '/usr/lib/pkgconfig',
+      '/usr/local/libdata/pkgconfig',
+      '/usr/libdata/pkgconfig'
+    ].filter(Boolean).join(':');
   } else {
     return '';
   }

lib/operation.js

@@ -63,6 +63,10 @@ function rotate (angle, options) {
 /**
  * Flip the image about the vertical Y axis. This always occurs after rotation, if any.
  * The use of `flip` implies the removal of the EXIF `Orientation` tag, if any.
+ *
+ * @example
+ * const output = await sharp(input).flip().toBuffer();
+ *
  * @param {Boolean} [flip=true]
  * @returns {Sharp}
  */
@@ -74,6 +78,10 @@ function flip (flip) {
 /**
  * Flop the image about the horizontal X axis. This always occurs after rotation, if any.
  * The use of `flop` implies the removal of the EXIF `Orientation` tag, if any.
+ *
+ * @example
+ * const output = await sharp(input).flop().toBuffer();
+ *
  * @param {Boolean} [flop=true]
  * @returns {Sharp}
  */
@@ -185,40 +193,107 @@ function affine (matrix, options) {
  * When a `sigma` is provided, performs a slower, more accurate sharpen of the L channel in the LAB colour space.
  * Separate control over the level of sharpening in "flat" and "jagged" areas is available.
  *
- * @param {number} [sigma] - the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`.
- * @param {number} [flat=1.0] - the level of sharpening to apply to "flat" areas.
- * @param {number} [jagged=2.0] - the level of sharpening to apply to "jagged" areas.
+ * See {@link https://www.libvips.org/API/current/libvips-convolution.html#vips-sharpen|libvips sharpen} operation.
+ *
+ * @example
+ * const data = await sharp(input).sharpen().toBuffer();
+ *
+ * @example
+ * const data = await sharp(input).sharpen({ sigma: 2 }).toBuffer();
+ *
+ * @example
+ * const data = await sharp(input)
+ *   .sharpen({
+ *     sigma: 2,
+ *     m1: 0
+ *     m2: 3,
+ *     x1: 3,
+ *     y2: 15,
+ *     y3: 15,
+ *   })
+ *   .toBuffer();
+ *
+ * @param {Object|number} [options] - if present, is an Object with attributes or (deprecated) a number for `options.sigma`.
+ * @param {number} [options.sigma] - the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`.
+ * @param {number} [options.m1=1.0] - the level of sharpening to apply to "flat" areas.
+ * @param {number} [options.m2=2.0] - the level of sharpening to apply to "jagged" areas.
+ * @param {number} [options.x1=2.0] - threshold between "flat" and "jagged"
+ * @param {number} [options.y2=10.0] - maximum amount of brightening.
+ * @param {number} [options.y3=20.0] - maximum amount of darkening.
+ * @param {number} [flat] - (deprecated) see `options.m1`.
+ * @param {number} [jagged] - (deprecated) see `options.m2`.
  * @returns {Sharp}
  * @throws {Error} Invalid parameters
  */
-function sharpen (sigma, flat, jagged) {
-  if (!is.defined(sigma)) {
+function sharpen (options, flat, jagged) {
+  if (!is.defined(options)) {
     // No arguments: default to mild sharpen
     this.options.sharpenSigma = -1;
-  } else if (is.bool(sigma)) {
-    // Boolean argument: apply mild sharpen?
-    this.options.sharpenSigma = sigma ? -1 : 0;
-  } else if (is.number(sigma) && is.inRange(sigma, 0.01, 10000)) {
-    // Numeric argument: specific sigma
-    this.options.sharpenSigma = sigma;
-    // Control over flat areas
+  } else if (is.bool(options)) {
+    // Deprecated boolean argument: apply mild sharpen?
+    this.options.sharpenSigma = options ? -1 : 0;
+  } else if (is.number(options) && is.inRange(options, 0.01, 10000)) {
+    // Deprecated numeric argument: specific sigma
+    this.options.sharpenSigma = options;
+    // Deprecated control over flat areas
     if (is.defined(flat)) {
       if (is.number(flat) && is.inRange(flat, 0, 10000)) {
-        this.options.sharpenFlat = flat;
+        this.options.sharpenM1 = flat;
       } else {
         throw is.invalidParameterError('flat', 'number between 0 and 10000', flat);
       }
     }
-    // Control over jagged areas
+    // Deprecated control over jagged areas
     if (is.defined(jagged)) {
       if (is.number(jagged) && is.inRange(jagged, 0, 10000)) {
-        this.options.sharpenJagged = jagged;
+        this.options.sharpenM2 = jagged;
       } else {
         throw is.invalidParameterError('jagged', 'number between 0 and 10000', jagged);
       }
     }
+  } else if (is.plainObject(options)) {
+    if (is.number(options.sigma) && is.inRange(options.sigma, 0.01, 10000)) {
+      this.options.sharpenSigma = options.sigma;
+    } else {
+      throw is.invalidParameterError('options.sigma', 'number between 0.01 and 10000', options.sigma);
+    }
+    if (is.defined(options.m1)) {
+      if (is.number(options.m1) && is.inRange(options.m1, 0, 10000)) {
+        this.options.sharpenM1 = options.m1;
+      } else {
+        throw is.invalidParameterError('options.m1', 'number between 0 and 10000', options.m1);
+      }
+    }
+    if (is.defined(options.m2)) {
+      if (is.number(options.m2) && is.inRange(options.m2, 0, 10000)) {
+        this.options.sharpenM2 = options.m2;
+      } else {
+        throw is.invalidParameterError('options.m2', 'number between 0 and 10000', options.m2);
+      }
+    }
+    if (is.defined(options.x1)) {
+      if (is.number(options.x1) && is.inRange(options.x1, 0, 10000)) {
+        this.options.sharpenX1 = options.x1;
+      } else {
+        throw is.invalidParameterError('options.x1', 'number between 0 and 10000', options.x1);
+      }
+    }
+    if (is.defined(options.y2)) {
+      if (is.number(options.y2) && is.inRange(options.y2, 0, 10000)) {
+        this.options.sharpenY2 = options.y2;
+      } else {
+        throw is.invalidParameterError('options.y2', 'number between 0 and 10000', options.y2);
+      }
+    }
+    if (is.defined(options.y3)) {
+      if (is.number(options.y3) && is.inRange(options.y3, 0, 10000)) {
+        this.options.sharpenY3 = options.y3;
+      } else {
+        throw is.invalidParameterError('options.y3', 'number between 0 and 10000', options.y3);
+      }
+    }
   } else {
-    throw is.invalidParameterError('sigma', 'number between 0.01 and 10000', sigma);
+    throw is.invalidParameterError('sigma', 'number between 0.01 and 10000', options);
   }
   return this;
 }
@@ -226,6 +301,13 @@ function sharpen (sigma, flat, jagged) {
 /**
  * Apply median filter.
  * When used without parameters the default window is 3x3.
+ *
+ * @example
+ * const output = await sharp(input).median().toBuffer();
+ *
+ * @example
+ * const output = await sharp(input).median(5).toBuffer();
+ *
  * @param {number} [size=3] square mask size: size x size
  * @returns {Sharp}
  * @throws {Error} Invalid parameters
@@ -356,6 +438,10 @@ function negate (options) {
 
 /**
  * Enhance output image contrast by stretching its luminance to cover the full dynamic range.
+ *
+ * @example
+ * const output = await sharp(input).normalise().toBuffer();
+ *
  * @param {Boolean} [normalise=true]
  * @returns {Sharp}
  */
@@ -366,6 +452,10 @@ function normalise (normalise) {
 
 /**
  * Alternative spelling of normalise.
+ *
+ * @example
+ * const output = await sharp(input).normalize().toBuffer();
+ *
  * @param {Boolean} [normalize=true]
  * @returns {Sharp}
  */
@@ -381,6 +471,14 @@ function normalize (normalize) {
  *
  * @since 0.28.3
  *
+ * @example
+ * const output = await sharp(input)
+ *   .clahe({
+ *     width: 3,
+ *     height: 3,
+ *   })
+ *   .toBuffer();
+ *
  * @param {Object} options
  * @param {number} options.width - integer width of the region in pixels.
  * @param {number} options.height - integer height of the region in pixels.
@@ -590,28 +688,38 @@ function recomb (inputMatrix) {
  * @since 0.22.1
  *
  * @example
- * sharp(input)
+ * // increase brightness by a factor of 2
+ * const output = await sharp(input)
  *   .modulate({
- *     brightness: 2 // increase brightness by a factor of 2
- *   });
+ *     brightness: 2
+ *   })
+ *   .toBuffer();
  *
- * sharp(input)
+ * @example
+ * // hue-rotate by 180 degrees
+ * const output = await sharp(input)
  *   .modulate({
- *     hue: 180 // hue-rotate by 180 degrees
- *   });
+ *     hue: 180
+ *   })
+ *   .toBuffer();
  *
- * sharp(input)
+ * @example
+ * // increase lightness by +50
+ * const output = await sharp(input)
  *   .modulate({
- *     lightness: 50 // increase lightness by +50
- *   });
+ *     lightness: 50
+ *   })
+ *   .toBuffer();
  *
+ * @example
  * // decreate brightness and saturation while also hue-rotating by 90 degrees
- * sharp(input)
+ * const output = await sharp(input)
  *   .modulate({
  *     brightness: 0.5,
  *     saturation: 0.5,
- *     hue: 90
- *   });
+ *     hue: 90,
+ *   })
+ *   .toBuffer();
  *
  * @param {Object} [options]
  * @param {number} [options.brightness] Brightness multiplier

lib/output.js

@@ -139,6 +139,7 @@ function toBuffer (options, callback) {
   } else if (this.options.resolveWithObject) {
     this.options.resolveWithObject = false;
   }
+  this.options.fileOut = '';
   return this._pipeline(is.fn(options) ? options : callback);
 }
 

lib/sharp.js

@@ -21,7 +21,7 @@ try {
     '- Consult the installation documentation: https://sharp.pixelplumbing.com/install'
   );
   // Check loaded
-  if (process.platform === 'win32') {
+  if (process.platform === 'win32' || /symbol/.test(err.message)) {
     const loadedModule = Object.keys(require.cache).find((i) => /[\\/]build[\\/]Release[\\/]sharp(.*)\.node$/.test(i));
     if (loadedModule) {
       const [, loadedPackage] = loadedModule.match(/node_modules[\\/]([^\\/]+)[\\/]/);

lib/utility.js

@@ -30,11 +30,11 @@ const interpolators = {
   bilinear: 'bilinear',
   /** [Bicubic interpolation](http://en.wikipedia.org/wiki/Bicubic_interpolation) (the default). */
   bicubic: 'bicubic',
-  /** [LBB interpolation](https://github.com/jcupitt/libvips/blob/master/libvips/resample/lbb.cpp#L100). Prevents some "[acutance](http://en.wikipedia.org/wiki/Acutance)" but typically reduces performance by a factor of 2. */
+  /** [LBB interpolation](https://github.com/libvips/libvips/blob/master/libvips/resample/lbb.cpp#L100). Prevents some "[acutance](http://en.wikipedia.org/wiki/Acutance)" but typically reduces performance by a factor of 2. */
   locallyBoundedBicubic: 'lbb',
   /** [Nohalo interpolation](http://eprints.soton.ac.uk/268086/). Prevents acutance but typically reduces performance by a factor of 3. */
   nohalo: 'nohalo',
-  /** [VSQBS interpolation](https://github.com/jcupitt/libvips/blob/master/libvips/resample/vsqbs.cpp#L48). Prevents "staircasing" when enlarging. */
+  /** [VSQBS interpolation](https://github.com/libvips/libvips/blob/master/libvips/resample/vsqbs.cpp#L48). Prevents "staircasing" when enlarging. */
   vertexSplitQuadraticBasisSpline: 'vsqbs'
 };
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "sharp",
   "description": "High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP, GIF, AVIF and TIFF images",
-  "version": "0.30.0",
+  "version": "0.30.3",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://github.com/lovell/sharp",
   "contributors": [
@@ -126,8 +126,8 @@
     "vips"
   ],
   "dependencies": {
-    "color": "^4.2.0",
-    "detect-libc": "^2.0.0",
+    "color": "^4.2.1",
+    "detect-libc": "^2.0.1",
     "node-addon-api": "^4.3.0",
     "prebuild-install": "^7.0.1",
     "semver": "^7.3.5",
@@ -143,10 +143,10 @@
     "exif-reader": "^1.0.3",
     "icc": "^2.0.0",
     "license-checker": "^25.0.1",
-    "mocha": "^9.2.0",
+    "mocha": "^9.2.2",
     "mock-fs": "^5.1.2",
     "nyc": "^15.1.0",
-    "prebuild": "^11.0.2",
+    "prebuild": "^11.0.3",
     "rimraf": "^3.0.2",
     "semistandard": "^16.0.1"
   },

src/common.cc

@@ -398,6 +398,10 @@ namespace sharp {
         // From filesystem
         imageType = DetermineImageType(descriptor->file.data());
         if (imageType == ImageType::MISSING) {
+          if (descriptor->file.find("<svg") != std::string::npos) {
+            throw vips::VError("Input file is missing, did you mean "
+              "sharp(Buffer.from('" + descriptor->file.substr(0, 8) + "...')?");
+          }
           throw vips::VError("Input file is missing");
         }
         if (imageType != ImageType::UNKNOWN) {
@@ -885,7 +889,7 @@ namespace sharp {
   }
 
   std::pair<double, double> ResolveShrink(int width, int height, int targetWidth, int targetHeight,
-    Canvas canvas, bool swap, bool withoutEnlargement) {
+    Canvas canvas, bool swap, bool withoutEnlargement, bool withoutReduction) {
     if (swap) {
       // Swap input width and height when requested.
       std::swap(width, height);
@@ -940,9 +944,14 @@ namespace sharp {
       }
     }
 
-    // We should not enlarge (oversample) the output image,
-    // if withoutEnlargement is specified.
-    if (withoutEnlargement) {
+    // We should not reduce or enlarge the output image, if
+    // withoutReduction or withoutEnlargement is specified.
+    if (withoutReduction) {
+      // Equivalent of VIPS_SIZE_UP
+      hshrink = std::min(1.0, hshrink);
+      vshrink = std::min(1.0, vshrink);
+    } else if (withoutEnlargement) {
+      // Equivalent of VIPS_SIZE_DOWN
       hshrink = std::max(1.0, hshrink);
       vshrink = std::max(1.0, vshrink);
     }

src/common.h

@@ -345,7 +345,7 @@ namespace sharp {
     the required thumbnail width/height and canvas mode.
   */
   std::pair<double, double> ResolveShrink(int width, int height, int targetWidth, int targetHeight,
-    Canvas canvas, bool swap, bool withoutEnlargement);
+    Canvas canvas, bool swap, bool withoutEnlargement, bool withoutReduction);
 
 }  // namespace sharp
 

src/operations.cc

@@ -209,7 +209,8 @@ namespace sharp {
   /*
    * Sharpen flat and jagged areas. Use sigma of -1.0 for fast sharpen.
    */
-  VImage Sharpen(VImage image, double const sigma, double const flat, double const jagged) {
+  VImage Sharpen(VImage image, double const sigma, double const m1, double const m2,
+    double const x1, double const y2, double const y3) {
     if (sigma == -1.0) {
       // Fast, mild sharpen
       VImage sharpen = VImage::new_matrixv(3, 3,
@@ -224,8 +225,14 @@ namespace sharp {
       if (colourspaceBeforeSharpen == VIPS_INTERPRETATION_RGB) {
         colourspaceBeforeSharpen = VIPS_INTERPRETATION_sRGB;
       }
-      return image.sharpen(
-        VImage::option()->set("sigma", sigma)->set("m1", flat)->set("m2", jagged))
+      return image
+        .sharpen(VImage::option()
+          ->set("sigma", sigma)
+          ->set("m1", m1)
+          ->set("m2", m2)
+          ->set("x1", x1)
+          ->set("y2", y2)
+          ->set("y3", y3))
         .colourspace(colourspaceBeforeSharpen);
     }
   }

src/operations.h

@@ -64,7 +64,8 @@ namespace sharp {
   /*
    * Sharpen flat and jagged areas. Use sigma of -1.0 for fast sharpen.
    */
-  VImage Sharpen(VImage image, double const sigma, double const flat, double const jagged);
+  VImage Sharpen(VImage image, double const sigma, double const m1, double const m2,
+    double const x1, double const y2, double const y3);
 
   /*
     Threshold an image

src/pipeline.cc

@@ -138,17 +138,6 @@ class PipelineWorker : public Napi::AsyncWorker {
         pageHeight = inputHeight;
       }
 
-      // If withoutReduction is specified,
-      // Override target width and height if less than respective value from input file
-       if (baton->withoutReduction) {
-          if (baton->width < inputWidth) {
-            baton->width = inputWidth;
-          }
-          if (baton->height < inputHeight) {
-            baton->height = inputHeight;
-          }
-      }
-
       // Scaling calculations
       double hshrink;
       double vshrink;
@@ -161,7 +150,7 @@ class PipelineWorker : public Napi::AsyncWorker {
       // Shrink to pageHeight, so we work for multi-page images
       std::tie(hshrink, vshrink) = sharp::ResolveShrink(
         inputWidth, pageHeight, targetResizeWidth, targetResizeHeight,
-        baton->canvas, swap, baton->withoutEnlargement);
+        baton->canvas, swap, baton->withoutEnlargement, baton->withoutReduction);
 
       // The jpeg preload shrink.
       int jpegShrinkOnLoad = 1;
@@ -184,7 +173,7 @@ class PipelineWorker : public Napi::AsyncWorker {
 
         if (inputImageType == sharp::ImageType::JPEG) {
           // Leave at least a factor of two for the final resize step, when fastShrinkOnLoad: false
-          // for more consistent results and avoid occasional small image shifting
+          // for more consistent results and to avoid extra sharpness to the image
           int factor = baton->fastShrinkOnLoad ? 1 : 2;
           if (shrink >= 8 * factor) {
             jpegShrinkOnLoad = 8;
@@ -193,6 +182,10 @@ class PipelineWorker : public Napi::AsyncWorker {
           } else if (shrink >= 2 * factor) {
             jpegShrinkOnLoad = 2;
           }
+          // Lower shrink-on-load for known libjpeg rounding errors
+          if (jpegShrinkOnLoad > 1 && static_cast<int>(shrink) == jpegShrinkOnLoad) {
+            jpegShrinkOnLoad /= 2;
+          }
         } else if (inputImageType == sharp::ImageType::WEBP ||
                    inputImageType == sharp::ImageType::SVG ||
                    inputImageType == sharp::ImageType::PDF) {
@@ -270,35 +263,28 @@ class PipelineWorker : public Napi::AsyncWorker {
       }
 
       // Any pre-shrinking may already have been done
-      int thumbWidth = image.width();
-      int thumbHeight = image.height();
+      inputWidth = image.width();
+      inputHeight = image.height();
 
       // After pre-shrink, but before the main shrink stage
       // Reuse the initial pageHeight if we didn't pre-shrink
-      int preshrunkPageHeight = shouldPreShrink ? sharp::GetPageHeight(image) : pageHeight;
-
-      if (baton->fastShrinkOnLoad && jpegShrinkOnLoad > 1) {
-        // JPEG shrink-on-load rounds the output dimensions down, which
-        // may cause incorrect dimensions when fastShrinkOnLoad is enabled
-        // Just recalculate vshrink / hshrink on the main image instead of
-        // the pre-shrunk image when this is the case
-        hshrink = static_cast<double>(thumbWidth) / (static_cast<double>(inputWidth) / hshrink);
-        vshrink = static_cast<double>(preshrunkPageHeight) / (static_cast<double>(pageHeight) / vshrink);
-      } else {
-        // Shrink to preshrunkPageHeight, so we work for multi-page images
-        std::tie(hshrink, vshrink) = sharp::ResolveShrink(
-          thumbWidth, preshrunkPageHeight, targetResizeWidth, targetResizeHeight,
-          baton->canvas, swap, baton->withoutEnlargement);
+      if (shouldPreShrink) {
+        pageHeight = sharp::GetPageHeight(image);
       }
 
-      int targetHeight = static_cast<int>(std::rint(static_cast<double>(preshrunkPageHeight) / vshrink));
+      // Shrink to pageHeight, so we work for multi-page images
+      std::tie(hshrink, vshrink) = sharp::ResolveShrink(
+        inputWidth, pageHeight, targetResizeWidth, targetResizeHeight,
+        baton->canvas, swap, baton->withoutEnlargement, baton->withoutReduction);
+
+      int targetHeight = static_cast<int>(std::rint(static_cast<double>(pageHeight) / vshrink));
       int targetPageHeight = targetHeight;
 
       // In toilet-roll mode, we must adjust vshrink so that we exactly hit
-      // preshrunkPageHeight or we'll have pixels straddling pixel boundaries
-      if (thumbHeight > preshrunkPageHeight) {
+      // pageHeight or we'll have pixels straddling pixel boundaries
+      if (inputHeight > pageHeight) {
         targetHeight *= nPages;
-        vshrink = static_cast<double>(thumbHeight) / targetHeight;
+        vshrink = static_cast<double>(inputHeight) / targetHeight;
       }
 
       // Ensure we're using a device-independent colour space
@@ -306,7 +292,8 @@ class PipelineWorker : public Napi::AsyncWorker {
       if (
         sharp::HasProfile(image) &&
         image.interpretation() != VIPS_INTERPRETATION_LABS &&
-        image.interpretation() != VIPS_INTERPRETATION_GREY16
+        image.interpretation() != VIPS_INTERPRETATION_GREY16 &&
+        image.interpretation() != VIPS_INTERPRETATION_B_W
       ) {
         // Convert to sRGB/P3 using embedded profile
         try {
@@ -367,7 +354,7 @@ class PipelineWorker : public Napi::AsyncWorker {
       }
 
       bool const shouldPremultiplyAlpha = sharp::HasAlpha(image) &&
-        (shouldResize || shouldBlur || shouldConv || shouldSharpen || shouldComposite);
+        (shouldResize || shouldBlur || shouldConv || shouldSharpen);
 
       // Premultiply image alpha channel before all transformations to avoid
       // dark fringing around bright pixels
@@ -532,12 +519,14 @@ class PipelineWorker : public Napi::AsyncWorker {
         MultiPageUnsupported(nPages, "Affine");
         std::vector<double> background;
         std::tie(image, background) = sharp::ApplyAlpha(image, baton->affineBackground, shouldPremultiplyAlpha);
+        vips::VInterpolate interp = vips::VInterpolate::new_from_name(
+          const_cast<char*>(baton->affineInterpolator.data()));
         image = image.affine(baton->affineMatrix, VImage::option()->set("background", background)
           ->set("idx", baton->affineIdx)
           ->set("idy", baton->affineIdy)
           ->set("odx", baton->affineOdx)
           ->set("ody", baton->affineOdy)
-          ->set("interpolate", baton->affineInterpolator));
+          ->set("interpolate", interp));
       }
 
       // Extend edges
@@ -588,11 +577,14 @@ class PipelineWorker : public Napi::AsyncWorker {
 
       // Sharpen
       if (shouldSharpen) {
-        image = sharp::Sharpen(image, baton->sharpenSigma, baton->sharpenFlat, baton->sharpenJagged);
+        image = sharp::Sharpen(image, baton->sharpenSigma, baton->sharpenM1, baton->sharpenM2,
+          baton->sharpenX1, baton->sharpenY2, baton->sharpenY3);
       }
 
       // Composite
       if (shouldComposite) {
+        std::vector<VImage> images = { image };
+        std::vector<int> modes, xs, ys;
         for (Composite *composite : baton->composite) {
           VImage compositeImage;
           sharp::ImageType compositeImageType = sharp::ImageType::UNKNOWN;
@@ -638,12 +630,12 @@ class PipelineWorker : public Napi::AsyncWorker {
             // gravity was used for extract_area, set it back to its default value of 0
             composite->gravity = 0;
           }
-          // Ensure image to composite is sRGB with premultiplied alpha
+          // Ensure image to composite is sRGB with unpremultiplied alpha
           compositeImage = compositeImage.colourspace(VIPS_INTERPRETATION_sRGB);
           if (!sharp::HasAlpha(compositeImage)) {
             compositeImage = sharp::EnsureAlpha(compositeImage, 1);
           }
-          if (!composite->premultiplied) compositeImage = compositeImage.premultiply();
+          if (composite->premultiplied) compositeImage = compositeImage.unpremultiply();
           // Calculate position
           int left;
           int top;
@@ -661,12 +653,12 @@ class PipelineWorker : public Napi::AsyncWorker {
             std::tie(left, top) = sharp::CalculateCrop(image.width(), image.height(),
               compositeImage.width(), compositeImage.height(), composite->gravity);
           }
-          // Composite
-          image = image.composite2(compositeImage, composite->mode, VImage::option()
-            ->set("premultiplied", TRUE)
-            ->set("x", left)
-            ->set("y", top));
+          images.push_back(compositeImage);
+          modes.push_back(composite->mode);
+          xs.push_back(left);
+          ys.push_back(top);
         }
+        image = image.composite(images, modes, VImage::option()->set("x", xs)->set("y", ys));
       }
 
       // Reverse premultiplication after all transformations:
@@ -1409,8 +1401,11 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
   baton->lightness = sharp::AttrAsDouble(options, "lightness");
   baton->medianSize = sharp::AttrAsUint32(options, "medianSize");
   baton->sharpenSigma = sharp::AttrAsDouble(options, "sharpenSigma");
-  baton->sharpenFlat = sharp::AttrAsDouble(options, "sharpenFlat");
-  baton->sharpenJagged = sharp::AttrAsDouble(options, "sharpenJagged");
+  baton->sharpenM1 = sharp::AttrAsDouble(options, "sharpenM1");
+  baton->sharpenM2 = sharp::AttrAsDouble(options, "sharpenM2");
+  baton->sharpenX1 = sharp::AttrAsDouble(options, "sharpenX1");
+  baton->sharpenY2 = sharp::AttrAsDouble(options, "sharpenY2");
+  baton->sharpenY3 = sharp::AttrAsDouble(options, "sharpenY3");
   baton->threshold = sharp::AttrAsInt32(options, "threshold");
   baton->thresholdGrayscale = sharp::AttrAsBool(options, "thresholdGrayscale");
   baton->trimThreshold = sharp::AttrAsDouble(options, "trimThreshold");
@@ -1442,7 +1437,7 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
   baton->affineIdy = sharp::AttrAsDouble(options, "affineIdy");
   baton->affineOdx = sharp::AttrAsDouble(options, "affineOdx");
   baton->affineOdy = sharp::AttrAsDouble(options, "affineOdy");
-  baton->affineInterpolator = vips::VInterpolate::new_from_name(sharp::AttrAsStr(options, "affineInterpolator").data());
+  baton->affineInterpolator = sharp::AttrAsStr(options, "affineInterpolator");
   baton->removeAlpha = sharp::AttrAsBool(options, "removeAlpha");
   baton->ensureAlpha = sharp::AttrAsDouble(options, "ensureAlpha");
   if (options.Has("boolean")) {

src/pipeline.h

@@ -90,8 +90,11 @@ struct PipelineBaton {
   double lightness;
   int medianSize;
   double sharpenSigma;
-  double sharpenFlat;
-  double sharpenJagged;
+  double sharpenM1;
+  double sharpenM2;
+  double sharpenX1;
+  double sharpenY2;
+  double sharpenY3;
   int threshold;
   bool thresholdGrayscale;
   double trimThreshold;
@@ -126,7 +129,7 @@ struct PipelineBaton {
   double affineIdy;
   double affineOdx;
   double affineOdy;
-  vips::VInterpolate affineInterpolator;
+  std::string affineInterpolator;
   int jpegQuality;
   bool jpegProgressive;
   std::string jpegChromaSubsampling;
@@ -234,8 +237,11 @@ struct PipelineBaton {
     lightness(0),
     medianSize(0),
     sharpenSigma(0.0),
-    sharpenFlat(1.0),
-    sharpenJagged(2.0),
+    sharpenM1(1.0),
+    sharpenM2(2.0),
+    sharpenX1(2.0),
+    sharpenY2(10.0),
+    sharpenY3(20.0),
     threshold(0),
     thresholdGrayscale(true),
     trimThreshold(0.0),
@@ -268,7 +274,7 @@ struct PipelineBaton {
     affineIdy(0),
     affineOdx(0),
     affineOdy(0),
-    affineInterpolator(vips::VInterpolate::new_from_name("bicubic")),
+    affineInterpolator("bicubic"),
     jpegQuality(80),
     jpegProgressive(false),
     jpegChromaSubsampling("4:2:0"),

src/sharp.cc

@@ -13,7 +13,6 @@
 // limitations under the License.
 
 #include <napi.h>
-#include <cstdlib>
 #include <vips/vips8>
 
 #include "common.h"
@@ -22,14 +21,6 @@
 #include "utilities.h"
 #include "stats.h"
 
-#if defined(_MSC_VER) && _MSC_VER >= 1400  // MSVC 2005/8
-static void empty_invalid_parameter_handler(const wchar_t* expression,
-  const wchar_t* function, const wchar_t* file, unsigned int line,
-  uintptr_t reserved) {
-  // No-op.
-}
-#endif
-
 static void* sharp_vips_init(void*) {
   g_setenv("VIPS_MIN_STACK_SIZE", "2m", FALSE);
   vips_init("sharp");
@@ -43,13 +34,6 @@ Napi::Object init(Napi::Env env, Napi::Object exports) {
   g_log_set_handler("VIPS", static_cast<GLogLevelFlags>(G_LOG_LEVEL_WARNING),
     static_cast<GLogFunc>(sharp::VipsWarningCallback), nullptr);
 
-  // Tell the CRT to not exit the application when an invalid parameter is
-  // passed. The main issue is that invalid FDs will trigger this behaviour.
-  // See: https://github.com/libvips/libvips/pull/2571.
-#if defined(_MSC_VER) && _MSC_VER >= 1400  // MSVC 2005/8
-  _set_invalid_parameter_handler(empty_invalid_parameter_handler);
-#endif
-
   // Methods available to JavaScript
   exports.Set("metadata", Napi::Function::New(env, metadata));
   exports.Set("pipeline", Napi::Function::New(env, pipeline));

test/unit/composite.js

@@ -45,22 +45,20 @@ const blends = [
 
 // Test
 describe('composite', () => {
-  it('blend', () => Promise.all(
-    blends.map(blend => {
+  blends.forEach(blend => {
+    it(`blend ${blend}`, async () => {
       const filename = `composite.blend.${blend}.png`;
       const actual = fixtures.path(`output.${filename}`);
       const expected = fixtures.expected(filename);
-      return sharp(redRect)
+      await sharp(redRect)
         .composite([{
           input: blueRect,
           blend
         }])
-        .toFile(actual)
-        .then(() => {
-          fixtures.assertMaxColourDistance(actual, expected);
-        });
-    })
-  ));
+        .toFile(actual);
+      fixtures.assertMaxColourDistance(actual, expected);
+    });
+  });
 
   it('premultiplied true', () => {
     const filename = 'composite.premultiplied.png';
@@ -121,11 +119,11 @@ describe('composite', () => {
       });
   });
 
-  it('multiple', () => {
+  it('multiple', async () => {
     const filename = 'composite-multiple.png';
     const actual = fixtures.path(`output.${filename}`);
     const expected = fixtures.expected(filename);
-    return sharp(redRect)
+    await sharp(redRect)
       .composite([{
         input: blueRect,
         gravity: 'northeast'
@@ -133,10 +131,8 @@ describe('composite', () => {
         input: greenRect,
         gravity: 'southwest'
       }])
-      .toFile(actual)
-      .then(() => {
-        fixtures.assertMaxColourDistance(actual, expected);
-      });
+      .toFile(actual);
+    fixtures.assertMaxColourDistance(actual, expected);
   });
 
   it('zero offset', done => {

test/unit/extend.js

@@ -140,7 +140,7 @@ describe('Extend', function () {
   });
 
   it('Premultiply background when compositing', async () => {
-    const background = '#bf1942cc';
+    const background = { r: 191, g: 25, b: 66, alpha: 0.8 };
     const data = await sharp({
       create: {
         width: 1, height: 1, channels: 4, background: '#fff0'
@@ -158,10 +158,6 @@ describe('Extend', function () {
       })
       .raw()
       .toBuffer();
-    const [r1, g1, b1, a1, r2, g2, b2, a2] = data;
-    assert.strictEqual(true, Math.abs(r2 - r1) < 2);
-    assert.strictEqual(true, Math.abs(g2 - g1) < 2);
-    assert.strictEqual(true, Math.abs(b2 - b1) < 2);
-    assert.strictEqual(true, Math.abs(a2 - a1) < 2);
+    assert.deepStrictEqual(Array.from(data), [191, 25, 66, 204, 191, 25, 66, 204]);
   });
 });

test/unit/io.js

@@ -328,6 +328,20 @@ describe('Input/output', function () {
       });
   });
 
+  it('Allow use of toBuffer and toFile with same instance', async () => {
+    const instance = sharp({
+      create: {
+        width: 8,
+        height: 8,
+        channels: 3,
+        background: 'red'
+      }
+    });
+    await instance.toFile(fixtures.path('output.jpg'));
+    const data = await instance.toBuffer();
+    assert.strictEqual(Buffer.isBuffer(data), true);
+  });
+
   it('Fail when output File is input File', function (done) {
     sharp(fixtures.inputJpg).toFile(fixtures.inputJpg, function (err) {
       assert(err instanceof Error);

test/unit/jp2.js

@@ -48,15 +48,8 @@ describe('JP2 output', () => {
             .resize(320, 240)
             .toBuffer(function (err, buffer80) {
               if (err) throw err;
-              sharp(fixtures.inputJp2)
-                .resize(320, 240)
-                .jp2({ quality: 90 })
-                .toBuffer(function (err, buffer90) {
-                  if (err) throw err;
-                  assert(buffer70.length < buffer80.length);
-                  assert(buffer80.length < buffer90.length);
-                  done();
-                });
+              assert(buffer70.length < buffer80.length);
+              done();
             });
         });
     });

test/unit/metadata.js

@@ -527,7 +527,7 @@ describe('Image metadata', function () {
     sharp(fixtures.inputJpg)
       .resize(64)
       .withMetadata({ icc: 'cmyk' })
-      .toFile(output, function (err, info) {
+      .toFile(output, function (err) {
         if (err) throw err;
         sharp(output).metadata(function (err, metadata) {
           if (err) throw err;
@@ -543,7 +543,7 @@ describe('Image metadata', function () {
           assert.strictEqual('Relative', profile.intent);
           assert.strictEqual('Printer', profile.deviceClass);
         });
-        fixtures.assertSimilar(output, fixtures.expected('icc-cmyk.jpg'), { threshold: 0 }, done);
+        fixtures.assertSimilar(output, fixtures.expected('icc-cmyk.jpg'), { threshold: 1 }, done);
       });
   });
 

test/unit/resize.js

@@ -368,7 +368,7 @@ describe('Resize dimensions', function () {
         assert.strictEqual(true, data.length > 0);
         assert.strictEqual('jpeg', info.format);
         assert.strictEqual(2800, info.width);
-        assert.strictEqual(2225, info.height);
+        assert.strictEqual(2286, info.height);
         done();
       });
   });
@@ -383,46 +383,12 @@ describe('Resize dimensions', function () {
         if (err) throw err;
         assert.strictEqual(true, data.length > 0);
         assert.strictEqual('jpeg', info.format);
-        assert.strictEqual(2725, info.width);
+        assert.strictEqual(2817, info.width);
         assert.strictEqual(2300, info.height);
         done();
       });
   });
 
-  it('Do not crop when fit = cover and withoutReduction = true and width >= outputWidth, and height < outputHeight', function (done) {
-    sharp(fixtures.inputJpg)
-      .resize({
-        width: 3000,
-        height: 1000,
-        withoutReduction: true
-      })
-      .toBuffer(function (err, data, info) {
-        if (err) throw err;
-        assert.strictEqual(true, data.length > 0);
-        assert.strictEqual('jpeg', info.format);
-        assert.strictEqual(3000, info.width);
-        assert.strictEqual(2225, info.height);
-        done();
-      });
-  });
-
-  it('Do not crop when fit = cover and withoutReduction = true and width < outputWidth, and height >= outputHeight', function (done) {
-    sharp(fixtures.inputJpg)
-      .resize({
-        width: 1500,
-        height: 2226,
-        withoutReduction: true
-      })
-      .toBuffer(function (err, data, info) {
-        if (err) throw err;
-        assert.strictEqual(true, data.length > 0);
-        assert.strictEqual('jpeg', info.format);
-        assert.strictEqual(2725, info.width);
-        assert.strictEqual(2226, info.height);
-        done();
-      });
-  });
-
   it('Do enlarge when input width is less than output width', function (done) {
     sharp(fixtures.inputJpg)
       .resize({
@@ -637,28 +603,21 @@ describe('Resize dimensions', function () {
       });
   });
 
-  it('fastShrinkOnLoad: false ensures image is not shifted', function (done) {
-    return sharp(fixtures.inputJpgCenteredImage)
-      .resize(9, 8, { fastShrinkOnLoad: false })
-      .png()
-      .toBuffer(function (err, data, info) {
-        if (err) throw err;
-        assert.strictEqual(9, info.width);
-        assert.strictEqual(8, info.height);
-        fixtures.assertSimilar(fixtures.expected('fast-shrink-on-load-false.png'), data, done);
-      });
-  });
-
-  it('fastShrinkOnLoad: true (default) might result in shifted image', function (done) {
-    return sharp(fixtures.inputJpgCenteredImage)
-      .resize(9, 8)
-      .png()
-      .toBuffer(function (err, data, info) {
-        if (err) throw err;
-        assert.strictEqual(9, info.width);
-        assert.strictEqual(8, info.height);
-        fixtures.assertSimilar(fixtures.expected('fast-shrink-on-load-true.png'), data, done);
-      });
+  [
+    true,
+    false
+  ].forEach(function (value) {
+    it(`fastShrinkOnLoad: ${value} does not causes image shifts`, function (done) {
+      sharp(fixtures.inputJpgCenteredImage)
+        .resize(9, 8, { fastShrinkOnLoad: value })
+        .png()
+        .toBuffer(function (err, data, info) {
+          if (err) throw err;
+          assert.strictEqual(9, info.width);
+          assert.strictEqual(8, info.height);
+          fixtures.assertSimilar(fixtures.expected('fast-shrink-on-load.png'), data, done);
+        });
+    });
   });
 
   [
@@ -780,6 +739,27 @@ describe('Resize dimensions', function () {
     assert.strictEqual(info.height, 1);
   });
 
+  it('Skip JPEG shrink-on-load for known libjpeg rounding errors', async () => {
+    const input = await sharp({
+      create: {
+        width: 1000,
+        height: 667,
+        channels: 3,
+        background: 'red'
+      }
+    })
+      .jpeg()
+      .toBuffer();
+
+    const output = await sharp(input)
+      .resize({ width: 500 })
+      .toBuffer();
+
+    const { width, height } = await sharp(output).metadata();
+    assert.strictEqual(width, 500);
+    assert.strictEqual(height, 334);
+  });
+
   it('unknown kernel throws', function () {
     assert.throws(function () {
       sharp().resize(null, null, { kernel: 'unknown' });

test/unit/sharpen.js

@@ -45,6 +45,22 @@ describe('Sharpen', function () {
       });
   });
 
+  it('sigma=3.5, m1=2, m2=4', (done) => {
+    sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .sharpen({ sigma: 3.5, m1: 2, m2: 4 })
+      .toBuffer()
+      .then(data => fixtures.assertSimilar(fixtures.expected('sharpen-5-2-4.jpg'), data, done));
+  });
+
+  it('sigma=3.5, m1=2, m2=4, x1=2, y2=5, y3=25', (done) => {
+    sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .sharpen({ sigma: 3.5, m1: 2, m2: 4, x1: 2, y2: 5, y3: 25 })
+      .toBuffer()
+      .then(data => fixtures.assertSimilar(fixtures.expected('sharpen-5-2-4.jpg'), data, done));
+  });
+
   if (!process.env.SHARP_TEST_WITHOUT_CACHE) {
     it('specific radius/levels with alpha channel', function (done) {
       sharp(fixtures.inputPngWithTransparency)
@@ -92,6 +108,36 @@ describe('Sharpen', function () {
     });
   });
 
+  it('invalid options.sigma', () => assert.throws(
+    () => sharp().sharpen({ sigma: -1 }),
+    /Expected number between 0\.01 and 10000 for options\.sigma but received -1 of type number/
+  ));
+
+  it('invalid options.m1', () => assert.throws(
+    () => sharp().sharpen({ sigma: 1, m1: -1 }),
+    /Expected number between 0 and 10000 for options\.m1 but received -1 of type number/
+  ));
+
+  it('invalid options.m2', () => assert.throws(
+    () => sharp().sharpen({ sigma: 1, m2: -1 }),
+    /Expected number between 0 and 10000 for options\.m2 but received -1 of type number/
+  ));
+
+  it('invalid options.x1', () => assert.throws(
+    () => sharp().sharpen({ sigma: 1, x1: -1 }),
+    /Expected number between 0 and 10000 for options\.x1 but received -1 of type number/
+  ));
+
+  it('invalid options.y2', () => assert.throws(
+    () => sharp().sharpen({ sigma: 1, y2: -1 }),
+    /Expected number between 0 and 10000 for options\.y2 but received -1 of type number/
+  ));
+
+  it('invalid options.y3', () => assert.throws(
+    () => sharp().sharpen({ sigma: 1, y3: -1 }),
+    /Expected number between 0 and 10000 for options\.y3 but received -1 of type number/
+  ));
+
   it('sharpened image is larger than non-sharpened', function (done) {
     sharp(fixtures.inputJpg)
       .resize(320, 240)

test/unit/svg.js

@@ -135,4 +135,11 @@ describe('SVG input', function () {
     assert.strictEqual(info.height, 240);
     assert.strictEqual(info.channels, 4);
   });
+
+  it('Detects SVG passed as a string', () =>
+    assert.rejects(
+      () => sharp('<svg></svg>').toBuffer(),
+      /Input file is missing, did you mean/
+    )
+  );
 });

test/unit/util.js

@@ -68,10 +68,13 @@ describe('Utilities', function () {
   });
 
   describe('Counters', function () {
-    it('Have zero value at rest', function () {
-      const counters = sharp.counters();
-      assert.strictEqual(0, counters.queue);
-      assert.strictEqual(0, counters.process);
+    it('Have zero value at rest', (done) => {
+      queueMicrotask(() => {
+        const counters = sharp.counters();
+        assert.strictEqual(0, counters.queue);
+        assert.strictEqual(0, counters.process);
+        done();
+      });
     });
   });