Release v0.34.0 (part 2 - see c26e67c)

The prebuilt Linux libvips binaries already do this

.github/workflows/ci.yml

@@ -208,7 +208,7 @@ jobs:
       contents: write
     name: wasm32 - prebuild
     runs-on: ubuntu-24.04
-    container: "emscripten/emsdk:4.0.5"
+    container: "emscripten/emsdk:4.0.6"
     steps:
       - name: Checkout
         uses: actions/checkout@v4

docs/package.json

@@ -11,7 +11,7 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/starlight": "^0.31.0",
-    "astro": "^5.1.7"
+    "@astrojs/starlight": "^0.32.3",
+    "astro": "^5.5.3"
   }
 }

docs/public/humans.txt

@@ -314,3 +314,6 @@ GitHub: https://github.com/happycollision
 
 Name: Florent Zabera
 GitHub: https://github.com/florentzabera
+
+Name: Quentin Pinçon
+GitHub: https://github.com/qpincon

docs/src/content/docs/api-operation.md

@@ -284,6 +284,52 @@ const gaussianBlurred = await sharp(input)
 ```
 
 
+## dilate
+> dilate([width]) ⇒ <code>Sharp</code>
+
+Expand foreground objects using the dilate morphological operator.
+
+
+**Throws**:
+
+- <code>Error</code> Invalid parameters
+
+
+| Param | Type | Default | Description |
+| --- | --- | --- | --- |
+| [width] | <code>Number</code> | <code>1</code> | dilation width in pixels. |
+
+**Example**  
+```js
+const output = await sharp(input)
+  .dilate()
+  .toBuffer();
+```
+
+
+## erode
+> erode([width]) ⇒ <code>Sharp</code>
+
+Shrink foreground objects using the erode morphological operator.
+
+
+**Throws**:
+
+- <code>Error</code> Invalid parameters
+
+
+| Param | Type | Default | Description |
+| --- | --- | --- | --- |
+| [width] | <code>Number</code> | <code>1</code> | erosion width in pixels. |
+
+**Example**  
+```js
+const output = await sharp(input)
+  .erode()
+  .toBuffer();
+```
+
+
 ## flatten
 > flatten([options]) ⇒ <code>Sharp</code>
 

docs/src/content/docs/changelog.md

@@ -6,7 +6,7 @@ title: Changelog
 
 Requires libvips v8.16.1
 
-### v0.34.0 - TBD
+### v0.34.0 - 4th April 2025
 
 * Breaking: Support array of input images to be joined or animated.
   [#1580](https://github.com/lovell/sharp/issues/1580)
@@ -14,6 +14,9 @@ Requires libvips v8.16.1
 * Breaking: Ensure `removeAlpha` removes all alpha channels.
   [#2266](https://github.com/lovell/sharp/issues/2266)
 
+* Breaking: Non-animated GIF output defaults to no-loop instead of loop-forever.
+  [#3394](https://github.com/lovell/sharp/issues/3394)
+
 * Breaking: Support `info.size` on wide-character systems via upgrade to C++17.
   [#3943](https://github.com/lovell/sharp/issues/3943)
 
@@ -24,6 +27,8 @@ Requires libvips v8.16.1
 
 * Expose WebP `smartDeblock` output option.
 
+* Prevent use of linux-x64 binaries with v1 microarchitecture.
+
 * Add `autoOrient` operation and constructor option.
   [#4151](https://github.com/lovell/sharp/pull/4151)
   [@happycollision](https://github.com/happycollision)
@@ -40,10 +45,17 @@ Requires libvips v8.16.1
   [#4207](https://github.com/lovell/sharp/pull/4207)
   [@calebmer](https://github.com/calebmer)
 
+* Expose erode and dilate operations.
+  [#4243](https://github.com/lovell/sharp/pull/4243)
+  [@qpincon](https://github.com/qpincon)
+
 * Add support for RGBE images. Requires libvips compiled with radiance support.
   [#4316](https://github.com/lovell/sharp/pull/4316)
   [@florentzabera](https://github.com/florentzabera)
 
+* Allow wide-gamut HEIF output at higher bitdepths.
+  [#4344](https://github.com/lovell/sharp/issues/4344)
+
 ## v0.33 - *gauge*
 
 Requires libvips v8.15.3

docs/src/content/docs/install.md

@@ -286,6 +286,10 @@ option.
 }
 ```
 
+When using `electron-forge` with [Webpack](#webpack),
+you may also need to add
+[forge-externals-plugin](https://www.npmjs.com/package/@timfish/forge-externals-plugin).
+
 ### vite
 
 Ensure `sharp` is excluded from bundling via the

lib/constructor.js

@@ -263,6 +263,8 @@ const Sharp = function (input, options) {
     trimBackground: [],
     trimThreshold: -1,
     trimLineArt: false,
+    dilateWidth: 0,
+    erodeWidth: 0,
     gamma: 0,
     gammaOut: 0,
     greyscale: false,
@@ -296,6 +298,8 @@ const Sharp = function (input, options) {
     withExif: {},
     withExifMerge: true,
     resolveWithObject: false,
+    loop: 1,
+    delay: [],
     // output format
     jpegQuality: 80,
     jpegProgressive: false,

lib/index.d.ts

@@ -504,6 +504,22 @@ declare namespace sharp {
          */
         blur(sigma?: number | boolean | BlurOptions): Sharp;
 
+        /**
+         * Expand foreground objects using the dilate morphological operator.
+         * @param {Number} [width=1] dilation width in pixels.
+         * @throws {Error} Invalid parameters
+         * @returns A sharp instance that can be used to chain operations
+         */
+        dilate(width?: number): Sharp;
+
+        /**
+         * Shrink foreground objects using the erode morphological operator.
+         * @param {Number} [width=1] erosion width in pixels.
+         * @throws {Error} Invalid parameters
+         * @returns A sharp instance that can be used to chain operations
+         */
+        erode(width?: number): Sharp;
+
         /**
          * Merge alpha transparency channel, if any, with background.
          * @param flatten true to enable and false to disable (defaults to true)

lib/libvips.js

@@ -113,7 +113,9 @@ const sha512 = (s) => createHash('sha512').update(s).digest('hex');
 const yarnLocator = () => {
   try {
     const identHash = sha512(`imgsharp-libvips-${buildPlatformArch()}`);
-    const npmVersion = semverCoerce(optionalDependencies[`@img/sharp-libvips-${buildPlatformArch()}`]).version;
+    const npmVersion = semverCoerce(optionalDependencies[`@img/sharp-libvips-${buildPlatformArch()}`], {
+      includePrerelease: true
+    }).version;
     return sha512(`${identHash}npm:${npmVersion}`).slice(0, 10);
   } catch {}
   return '';

lib/operation.js

@@ -443,6 +443,52 @@ function blur (options) {
   return this;
 }
 
+/**
+ * Expand foreground objects using the dilate morphological operator.
+ *
+ * @example
+ * const output = await sharp(input)
+ *   .dilate()
+ *   .toBuffer();
+ *
+ * @param {Number} [width=1] dilation width in pixels.
+ * @returns {Sharp}
+ * @throws {Error} Invalid parameters
+ */
+function dilate (width) {
+  if (!is.defined(width)) {
+    this.options.dilateWidth = 1;
+  } else if (is.integer(width) && width > 0) {
+    this.options.dilateWidth = width;
+  } else {
+    throw is.invalidParameterError('dilate', 'positive integer', dilate);
+  }
+  return this;
+}
+
+/**
+ * Shrink foreground objects using the erode morphological operator.
+ *
+ * @example
+ * const output = await sharp(input)
+ *   .erode()
+ *   .toBuffer();
+ *
+ * @param {Number} [width=1] erosion width in pixels.
+ * @returns {Sharp}
+ * @throws {Error} Invalid parameters
+ */
+function erode (width) {
+  if (!is.defined(width)) {
+    this.options.erodeWidth = 1;
+  } else if (is.integer(width) && width > 0) {
+    this.options.erodeWidth = width;
+  } else {
+    throw is.invalidParameterError('erode', 'positive integer', erode);
+  }
+  return this;
+}
+
 /**
  * Merge alpha transparency channel, if any, with a background, then remove the alpha channel.
  *
@@ -958,6 +1004,8 @@ module.exports = function (Sharp) {
     flop,
     affine,
     sharpen,
+    erode,
+    dilate,
     median,
     blur,
     flatten,

lib/sharp.js

@@ -17,9 +17,9 @@ const paths = [
   '@img/sharp-wasm32/sharp.node'
 ];
 
-let sharp;
+let path, sharp;
 const errors = [];
-for (const path of paths) {
+for (path of paths) {
   try {
     sharp = require(path);
     break;
@@ -29,6 +29,14 @@ for (const path of paths) {
   }
 }
 
+/* istanbul ignore next */
+if (sharp && path.startsWith('@img/sharp-linux-x64') && !sharp._isUsingX64V2()) {
+  const err = new Error('Prebuilt binaries for linux-x64 require v2 microarchitecture');
+  err.code = 'Unsupported CPU';
+  errors.push(err);
+  sharp = null;
+}
+
 /* istanbul ignore next */
 if (sharp) {
   module.exports = sharp;

npm/darwin-arm64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-darwin-arm64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with macOS 64-bit ARM",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-darwin-arm64": "1.1.0-rc4"
+    "@img/sharp-libvips-darwin-arm64": "1.1.0"
   },
   "files": [
     "lib"

npm/darwin-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-darwin-x64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with macOS x64",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-darwin-x64": "1.1.0-rc4"
+    "@img/sharp-libvips-darwin-x64": "1.1.0"
   },
   "files": [
     "lib"

npm/linux-arm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linux-arm",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (glibc) ARM (32-bit)",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linux-arm": "1.1.0-rc4.1"
+    "@img/sharp-libvips-linux-arm": "1.1.0"
   },
   "files": [
     "lib"

npm/linux-arm64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linux-arm64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (glibc) 64-bit ARM",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linux-arm64": "1.1.0-rc4"
+    "@img/sharp-libvips-linux-arm64": "1.1.0"
   },
   "files": [
     "lib"

npm/linux-ppc64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linux-ppc64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (glibc) ppc64",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linux-ppc64": "1.1.0-rc4"
+    "@img/sharp-libvips-linux-ppc64": "1.1.0"
   },
   "files": [
     "lib"

npm/linux-s390x/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linux-s390x",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (glibc) s390x",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linux-s390x": "1.1.0-rc4"
+    "@img/sharp-libvips-linux-s390x": "1.1.0"
   },
   "files": [
     "lib"

npm/linux-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linux-x64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (glibc) x64",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linux-x64": "1.1.0-rc4"
+    "@img/sharp-libvips-linux-x64": "1.1.0"
   },
   "files": [
     "lib"

npm/linuxmusl-arm64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linuxmusl-arm64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (musl) 64-bit ARM",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linuxmusl-arm64": "1.1.0-rc4"
+    "@img/sharp-libvips-linuxmusl-arm64": "1.1.0"
   },
   "files": [
     "lib"

npm/linuxmusl-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-linuxmusl-x64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Linux (musl) x64",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
   },
   "preferUnplugged": true,
   "optionalDependencies": {
-    "@img/sharp-libvips-linuxmusl-x64": "1.1.0-rc4"
+    "@img/sharp-libvips-linuxmusl-x64": "1.1.0"
   },
   "files": [
     "lib"

npm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "private": "true",
   "workspaces": [
     "darwin-arm64",

npm/wasm32/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-wasm32",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with wasm32",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
@@ -31,7 +31,7 @@
     "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
   },
   "dependencies": {
-    "@emnapi/runtime": "^1.3.1"
+    "@emnapi/runtime": "^1.4.0"
   },
   "cpu": [
     "wasm32"

npm/win32-ia32/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-win32-ia32",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Windows x86 (32-bit)",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",

npm/win32-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@img/sharp-win32-x64",
-  "version": "0.34.0-rc.0",
+  "version": "0.34.0",
   "description": "Prebuilt sharp for use with Windows x64",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",

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": "0.34.0-rc.0",
+  "version": "0.34.0",
   "author": "Lovell Fuller <npm@lovell.info>",
   "homepage": "https://sharp.pixelplumbing.com",
   "contributors": [
@@ -142,36 +142,36 @@
     "semver": "^7.7.1"
   },
   "optionalDependencies": {
-    "@img/sharp-darwin-arm64": "0.34.0-rc.0",
-    "@img/sharp-darwin-x64": "0.34.0-rc.0",
-    "@img/sharp-libvips-darwin-arm64": "1.1.0-rc4",
-    "@img/sharp-libvips-darwin-x64": "1.1.0-rc4",
-    "@img/sharp-libvips-linux-arm": "1.1.0-rc4.1",
-    "@img/sharp-libvips-linux-arm64": "1.1.0-rc4",
-    "@img/sharp-libvips-linux-ppc64": "1.1.0-rc4",
-    "@img/sharp-libvips-linux-s390x": "1.1.0-rc4",
-    "@img/sharp-libvips-linux-x64": "1.1.0-rc4",
-    "@img/sharp-libvips-linuxmusl-arm64": "1.1.0-rc4",
-    "@img/sharp-libvips-linuxmusl-x64": "1.1.0-rc4",
-    "@img/sharp-linux-arm": "0.34.0-rc.0",
-    "@img/sharp-linux-arm64": "0.34.0-rc.0",
-    "@img/sharp-linux-s390x": "0.34.0-rc.0",
-    "@img/sharp-linux-x64": "0.34.0-rc.0",
-    "@img/sharp-linuxmusl-arm64": "0.34.0-rc.0",
-    "@img/sharp-linuxmusl-x64": "0.34.0-rc.0",
-    "@img/sharp-wasm32": "0.34.0-rc.0",
-    "@img/sharp-win32-ia32": "0.34.0-rc.0",
-    "@img/sharp-win32-x64": "0.34.0-rc.0"
+    "@img/sharp-darwin-arm64": "0.34.0",
+    "@img/sharp-darwin-x64": "0.34.0",
+    "@img/sharp-libvips-darwin-arm64": "1.1.0",
+    "@img/sharp-libvips-darwin-x64": "1.1.0",
+    "@img/sharp-libvips-linux-arm": "1.1.0",
+    "@img/sharp-libvips-linux-arm64": "1.1.0",
+    "@img/sharp-libvips-linux-ppc64": "1.1.0",
+    "@img/sharp-libvips-linux-s390x": "1.1.0",
+    "@img/sharp-libvips-linux-x64": "1.1.0",
+    "@img/sharp-libvips-linuxmusl-arm64": "1.1.0",
+    "@img/sharp-libvips-linuxmusl-x64": "1.1.0",
+    "@img/sharp-linux-arm": "0.34.0",
+    "@img/sharp-linux-arm64": "0.34.0",
+    "@img/sharp-linux-s390x": "0.34.0",
+    "@img/sharp-linux-x64": "0.34.0",
+    "@img/sharp-linuxmusl-arm64": "0.34.0",
+    "@img/sharp-linuxmusl-x64": "0.34.0",
+    "@img/sharp-wasm32": "0.34.0",
+    "@img/sharp-win32-ia32": "0.34.0",
+    "@img/sharp-win32-x64": "0.34.0"
   },
   "devDependencies": {
-    "@emnapi/runtime": "^1.3.1",
-    "@img/sharp-libvips-dev": "1.1.0-rc4",
-    "@img/sharp-libvips-dev-wasm32": "1.1.0-rc4",
-    "@img/sharp-libvips-win32-ia32": "1.1.0-rc4",
-    "@img/sharp-libvips-win32-x64": "1.1.0-rc4",
+    "@emnapi/runtime": "^1.4.0",
+    "@img/sharp-libvips-dev": "1.1.0",
+    "@img/sharp-libvips-dev-wasm32": "1.1.0",
+    "@img/sharp-libvips-win32-ia32": "1.1.0",
+    "@img/sharp-libvips-win32-x64": "1.1.0",
     "@types/node": "*",
     "cc": "^3.0.1",
-    "emnapi": "^1.3.1",
+    "emnapi": "^1.4.0",
     "exif-reader": "^2.0.2",
     "extract-zip": "^2.0.1",
     "icc": "^3.0.0",

src/binding.gyp

@@ -80,6 +80,9 @@
   }, {
     'target_name': 'sharp-<(platform_and_arch)',
     'defines': [
+      'G_DISABLE_ASSERT',
+      'G_DISABLE_CAST_CHECKS',
+      'G_DISABLE_CHECKS',
       'NAPI_VERSION=9',
       'NODE_ADDON_API_DISABLE_DEPRECATED',
       'NODE_API_SWALLOW_UNTHROWABLE_EXCEPTIONS'
@@ -179,6 +182,7 @@
                 '-Wl,-s',
                 '-Wl,--disable-new-dtags',
                 '-Wl,-z,nodelete',
+                '-Wl,-Bsymbolic-functions',
                 '-Wl,-rpath=\'$$ORIGIN/../../sharp-libvips-<(platform_and_arch)/lib\'',
                 '-Wl,-rpath=\'$$ORIGIN/../../../sharp-libvips-<(platform_and_arch)/<(sharp_libvips_version)/lib\'',
                 '-Wl,-rpath=\'$$ORIGIN/../../node_modules/@img/sharp-libvips-<(platform_and_arch)/lib\'',

src/operations.cc

@@ -472,4 +472,26 @@ namespace sharp {
     }
   }
 
+  /*
+   * Dilate an image
+   */
+  VImage Dilate(VImage image, int const width) {
+    int const maskWidth = 2 * width + 1;
+    VImage mask = VImage::new_matrix(maskWidth, maskWidth);
+    return image.morph(
+      mask,
+      VIPS_OPERATION_MORPHOLOGY_DILATE).invert();
+  }
+
+  /*
+   * Erode an image
+   */
+  VImage Erode(VImage image, int const width) {
+    int const maskWidth = 2 * width + 1;
+    VImage mask = VImage::new_matrix(maskWidth, maskWidth);
+    return image.morph(
+      mask,
+      VIPS_OPERATION_MORPHOLOGY_ERODE).invert();
+  }
+
 }  // namespace sharp

src/operations.h

@@ -120,6 +120,15 @@ namespace sharp {
   VImage EmbedMultiPage(VImage image, int left, int top, int width, int height,
                         VipsExtend extendWith, std::vector<double> background, int nPages, int *pageHeight);
 
+  /*
+   * Dilate an image
+   */
+  VImage Dilate(VImage image, int const maskWidth);
+
+  /*
+   * Erode an image
+   */
+  VImage Erode(VImage image, int const maskWidth);
 }  // namespace sharp
 
 #endif  // SRC_OPERATIONS_H_

src/pipeline.cc

@@ -609,6 +609,16 @@ class PipelineWorker : public Napi::AsyncWorker {
         image = sharp::Threshold(image, baton->threshold, baton->thresholdGrayscale);
       }
 
+      // Dilate - must happen before blurring, due to the utility of dilating after thresholding
+      if (baton->dilateWidth != 0) {
+        image = sharp::Dilate(image, baton->dilateWidth);
+      }
+
+      // Erode - must happen before blurring, due to the utility of eroding after thresholding
+      if (baton->erodeWidth != 0) {
+        image = sharp::Erode(image, baton->erodeWidth);
+      }
+
       // Blur
       if (shouldBlur) {
         image = sharp::Blur(image, baton->blurSigma, baton->precision, baton->minAmpl);
@@ -1032,7 +1042,7 @@ class PipelineWorker : public Napi::AsyncWorker {
           (baton->formatOut == "input" && inputImageType == sharp::ImageType::HEIF)) {
           // Write HEIF to buffer
           sharp::AssertImageTypeDimensions(image, sharp::ImageType::HEIF);
-          image = sharp::RemoveAnimationProperties(image).cast(VIPS_FORMAT_UCHAR);
+          image = sharp::RemoveAnimationProperties(image);
           VipsArea *area = reinterpret_cast<VipsArea*>(image.heifsave_buffer(VImage::option()
             ->set("keep", baton->keepMetadata)
             ->set("Q", baton->heifQuality)
@@ -1227,7 +1237,7 @@ class PipelineWorker : public Napi::AsyncWorker {
           (willMatchInput && inputImageType == sharp::ImageType::HEIF)) {
           // Write HEIF to file
           sharp::AssertImageTypeDimensions(image, sharp::ImageType::HEIF);
-          image = sharp::RemoveAnimationProperties(image).cast(VIPS_FORMAT_UCHAR);
+          image = sharp::RemoveAnimationProperties(image);
           image.heifsave(const_cast<char*>(baton->fileOut.data()), VImage::option()
             ->set("keep", baton->keepMetadata)
             ->set("Q", baton->heifQuality)
@@ -1621,6 +1631,8 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
   baton->gammaOut = sharp::AttrAsDouble(options, "gammaOut");
   baton->linearA = sharp::AttrAsVectorOfDouble(options, "linearA");
   baton->linearB = sharp::AttrAsVectorOfDouble(options, "linearB");
+  baton->dilateWidth = sharp::AttrAsUint32(options, "dilateWidth");
+  baton->erodeWidth = sharp::AttrAsUint32(options, "erodeWidth");
   baton->greyscale = sharp::AttrAsBool(options, "greyscale");
   baton->normalise = sharp::AttrAsBool(options, "normalise");
   baton->normaliseLower = sharp::AttrAsUint32(options, "normaliseLower");
@@ -1705,6 +1717,8 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
   }
   baton->withExifMerge = sharp::AttrAsBool(options, "withExifMerge");
   baton->timeoutSeconds = sharp::AttrAsUint32(options, "timeoutSeconds");
+  baton->loop = sharp::AttrAsUint32(options, "loop");
+  baton->delay = sharp::AttrAsInt32Vector(options, "delay");
   // Format-specific
   baton->jpegQuality = sharp::AttrAsUint32(options, "jpegQuality");
   baton->jpegProgressive = sharp::AttrAsBool(options, "jpegProgressive");
@@ -1774,13 +1788,6 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
   baton->jxlEffort = sharp::AttrAsUint32(options, "jxlEffort");
   baton->jxlLossless = sharp::AttrAsBool(options, "jxlLossless");
   baton->rawDepth = sharp::AttrAsEnum<VipsBandFormat>(options, "rawDepth", VIPS_TYPE_BAND_FORMAT);
-  // Animated output properties
-  if (sharp::HasAttr(options, "loop")) {
-    baton->loop = sharp::AttrAsUint32(options, "loop");
-  }
-  if (sharp::HasAttr(options, "delay")) {
-    baton->delay = sharp::AttrAsInt32Vector(options, "delay");
-  }
   baton->tileSize = sharp::AttrAsUint32(options, "tileSize");
   baton->tileOverlap = sharp::AttrAsUint32(options, "tileOverlap");
   baton->tileAngle = sharp::AttrAsInt32(options, "tileAngle");

src/pipeline.h

@@ -101,6 +101,8 @@ struct PipelineBaton {
   int trimOffsetTop;
   std::vector<double> linearA;
   std::vector<double> linearB;
+  int dilateWidth;
+  int erodeWidth;
   double gamma;
   double gammaOut;
   bool greyscale;
@@ -274,6 +276,8 @@ struct PipelineBaton {
     trimOffsetTop(0),
     linearA{},
     linearB{},
+    dilateWidth(0),
+    erodeWidth(0),
     gamma(0.0),
     greyscale(false),
     normalise(false),
@@ -380,7 +384,7 @@ struct PipelineBaton {
     ensureAlpha(-1.0),
     colourspacePipeline(VIPS_INTERPRETATION_LAST),
     colourspace(VIPS_INTERPRETATION_LAST),
-    loop(-1),
+    loop(1),
     tileSize(256),
     tileOverlap(0),
     tileContainer(VIPS_FOREIGN_DZ_CONTAINER_FS),

src/sharp.cc

@@ -33,6 +33,7 @@ Napi::Object init(Napi::Env env, Napi::Object exports) {
   exports.Set("block", Napi::Function::New(env, block));
   exports.Set("_maxColourDistance", Napi::Function::New(env, _maxColourDistance));
   exports.Set("_isUsingJemalloc", Napi::Function::New(env, _isUsingJemalloc));
+  exports.Set("_isUsingX64V2", Napi::Function::New(env, _isUsingX64V2));
   exports.Set("stats", Napi::Function::New(env, stats));
   return exports;
 }

src/utilities.cc

@@ -267,3 +267,20 @@ Napi::Value _isUsingJemalloc(const Napi::CallbackInfo& info) {
   return Napi::Boolean::New(env, false);
 }
 #endif
+
+#if defined(__GNUC__) && defined(__x86_64__)
+// Are SSE 4.2 intrinsics available at runtime?
+Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info) {
+  Napi::Env env = info.Env();
+  unsigned int eax, ebx, ecx, edx;
+  __asm__ __volatile__("cpuid"
+    : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
+    : "a"(1));
+  return Napi::Boolean::New(env, (ecx & 1U << 20) != 0);
+}
+#else
+Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info) {
+  Napi::Env env = info.Env();
+  return Napi::Boolean::New(env, false);
+}
+#endif

src/utilities.h

@@ -15,5 +15,6 @@ Napi::Value format(const Napi::CallbackInfo& info);
 void block(const Napi::CallbackInfo& info);
 Napi::Value _maxColourDistance(const Napi::CallbackInfo& info);
 Napi::Value _isUsingJemalloc(const Napi::CallbackInfo& info);
+Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info);
 
 #endif  // SRC_UTILITIES_H_

test/fixtures/index.js

@@ -128,6 +128,8 @@ module.exports = {
 
   inputJPGBig: getPath('flowers.jpeg'),
 
+  inputPngDotAndLines: getPath('dot-and-lines.png'),
+
   inputPngStripesV: getPath('stripesV.png'),
   inputPngStripesH: getPath('stripesH.png'),
 

test/types/sharp.test-d.ts

@@ -740,3 +740,8 @@ sharp([input, input], {
     valign: 'bottom'
   }
 });
+
+sharp().erode();
+sharp().erode(1);
+sharp().dilate();
+sharp().dilate(1);

test/unit/dilate.js

@@ -0,0 +1,38 @@
+'use strict';
+
+const assert = require('assert');
+
+const sharp = require('../../');
+const fixtures = require('../fixtures');
+
+describe('Dilate', function () {
+  it('dilate 1 png', function (done) {
+    sharp(fixtures.inputPngDotAndLines)
+      .dilate(1)
+      .toBuffer(function (err, data, info) {
+        if (err) throw err;
+        assert.strictEqual('png', info.format);
+        assert.strictEqual(100, info.width);
+        assert.strictEqual(100, info.height);
+        fixtures.assertSimilar(fixtures.expected('dilate-1.png'), data, done);
+      });
+  });
+
+  it('dilate 1 png - default width', function (done) {
+    sharp(fixtures.inputPngDotAndLines)
+      .dilate()
+      .toBuffer(function (err, data, info) {
+        if (err) throw err;
+        assert.strictEqual('png', info.format);
+        assert.strictEqual(100, info.width);
+        assert.strictEqual(100, info.height);
+        fixtures.assertSimilar(fixtures.expected('dilate-1.png'), data, done);
+      });
+  });
+
+  it('invalid dilation width', function () {
+    assert.throws(function () {
+      sharp(fixtures.inputJpg).dilate(-1);
+    });
+  });
+});

test/unit/erode.js

@@ -0,0 +1,38 @@
+'use strict';
+
+const assert = require('assert');
+
+const sharp = require('../../');
+const fixtures = require('../fixtures');
+
+describe('Erode', function () {
+  it('erode 1 png', function (done) {
+    sharp(fixtures.inputPngDotAndLines)
+      .erode(1)
+      .toBuffer(function (err, data, info) {
+        if (err) throw err;
+        assert.strictEqual('png', info.format);
+        assert.strictEqual(100, info.width);
+        assert.strictEqual(100, info.height);
+        fixtures.assertSimilar(fixtures.expected('erode-1.png'), data, done);
+      });
+  });
+
+  it('erode 1 png - default width', function (done) {
+    sharp(fixtures.inputPngDotAndLines)
+      .erode()
+      .toBuffer(function (err, data, info) {
+        if (err) throw err;
+        assert.strictEqual('png', info.format);
+        assert.strictEqual(100, info.width);
+        assert.strictEqual(100, info.height);
+        fixtures.assertSimilar(fixtures.expected('erode-1.png'), data, done);
+      });
+  });
+
+  it('invalid erosion width', function () {
+    assert.throws(function () {
+      sharp(fixtures.inputJpg).erode(-1);
+    });
+  });
+});

test/unit/gif.js

@@ -224,4 +224,18 @@ describe('GIF input', () => {
     const after = await input.gif({ interPaletteMaxError: 100 }).toBuffer();
     assert.strict(before.length > after.length);
   });
+
+  it('non-animated input defaults to no-loop', async () => {
+    for (const input of [fixtures.inputGif, fixtures.inputPng]) {
+      const data = await sharp(input)
+        .resize(8)
+        .gif({ effort: 1 })
+        .toBuffer();
+
+      const { format, pages, loop } = await sharp(data).metadata();
+      assert.strictEqual('gif', format);
+      assert.strictEqual(1, pages);
+      assert.strictEqual(1, loop);
+    }
+  });
 });