Release v0.30.2

And remove the empty invalid parameter handler, which should
be present in the C layer instead.

This partially reverts commit
659cdabd8e,
the added test case in that commit is still preserved.

.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-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 +4,38 @@
 
 Requires libvips v8.12.2
 
+### 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.

lib/composite.js

@@ -162,7 +162,6 @@ function composite (images) {
         throw is.invalidParameterError('premultiplied', 'boolean', image.premultiplied);
       }
     }
-
     return composite;
   });
   return this;

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']
+    return [
-      .filter(function (p) { return !!p; })
+      brewPkgConfigPath.trim(),
-      .join(':');
+      env.PKG_CONFIG_PATH,
+      '/usr/local/lib/pkgconfig',
+      '/usr/lib/pkgconfig',
+      '/usr/local/libdata/pkgconfig',
+      '/usr/libdata/pkgconfig'
+    ].filter(Boolean).join(':');
   } else {
     return '';
   }

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/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": "0.30.2",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://github.com/lovell/sharp",
   "contributors": [
@@ -126,8 +126,8 @@
     "vips"
   ],
   "dependencies": {
-    "color": "^4.2.0",
+    "color": "^4.2.1",
-    "detect-libc": "^2.0.0",
+    "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": "^9.2.1",
     "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,
+    // We should not reduce or enlarge the output image, if
-    // if withoutEnlargement is specified.
+    // withoutReduction or withoutEnlargement is specified.
-    if (withoutEnlargement) {
+    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/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();
+      inputWidth = image.width();
-      int thumbHeight = image.height();
+      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 (shouldPreShrink) {
-
+        pageHeight = sharp::GetPageHeight(image);
-      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);
       }
 
-      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
+      // pageHeight or we'll have pixels straddling pixel boundaries
-      if (thumbHeight > preshrunkPageHeight) {
+      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 {
@@ -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
@@ -593,6 +582,8 @@ class PipelineWorker : public Napi::AsyncWorker {
 
       // 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 +629,12 @@ 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 +652,12 @@ class PipelineWorker : public Napi::AsyncWorker {
             std::tie(left, top) = sharp::CalculateCrop(image.width(), image.height(),
               compositeImage.width(), compositeImage.height(), composite->gravity);
           }
-          // Composite
+          images.push_back(compositeImage);
-          image = image.composite2(compositeImage, composite->mode, VImage::option()
+          modes.push_back(composite->mode);
-            ->set("premultiplied", TRUE)
+          xs.push_back(left);
-            ->set("x", left)
+          ys.push_back(top);
-            ->set("y", top));
         }
+        image = image.composite(images, modes, VImage::option()->set("x", xs)->set("y", ys));
       }
 
       // Reverse premultiplication after all transformations:
@@ -1442,7 +1433,7 @@ 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

@@ -126,7 +126,7 @@ struct PipelineBaton {
   double affineIdy;
   double affineOdx;
   double affineOdy;
-  vips::VInterpolate affineInterpolator;
+  std::string affineInterpolator;
   int jpegQuality;
   bool jpegProgressive;
   std::string jpegChromaSubsampling;
@@ -268,7 +268,7 @@ 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.forEach(blend => {
-    blends.map(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)
+        .toFile(actual);
-        .then(() => {
+      fixtures.assertMaxColourDistance(actual, expected);
-          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)
+      .toFile(actual);
-      .then(() => {
+    fixtures.assertMaxColourDistance(actual, expected);
-        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.deepStrictEqual(Array.from(data), [191, 25, 65, 204, 238, 31, 82, 204]);
-    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);
   });
 });

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/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)
+    true,
-      .resize(9, 8, { fastShrinkOnLoad: false })
+    false
-      .png()
+  ].forEach(function (value) {
-      .toBuffer(function (err, data, info) {
+    it(`fastShrinkOnLoad: ${value} does not causes image shifts`, function (done) {
-        if (err) throw err;
+      sharp(fixtures.inputJpgCenteredImage)
-        assert.strictEqual(9, info.width);
+        .resize(9, 8, { fastShrinkOnLoad: value })
-        assert.strictEqual(8, info.height);
+        .png()
-        fixtures.assertSimilar(fixtures.expected('fast-shrink-on-load-false.png'), data, done);
+        .toBuffer(function (err, data, info) {
-      });
+          if (err) throw err;
-  });
+          assert.strictEqual(9, info.width);
-
+          assert.strictEqual(8, info.height);
-  it('fastShrinkOnLoad: true (default) might result in shifted image', function (done) {
+          fixtures.assertSimilar(fixtures.expected('fast-shrink-on-load.png'), data, 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);
-      });
   });
 
   [
@@ -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/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/
+    )
+  );
 });