@react-pdf/png-js - npm Package Compare versions

Comparing version 2.3.1 to 3.0.0

lib/png-js.js

 import fs from 'fs';
 import zlib from 'zlib';
 
-var PNG = /*#__PURE__*/function () {
-  PNG.decode = function decode(path, fn) {
+class PNG {
+  static decode(path, fn) {
     {
-      return fs.readFile(path, function (err, file) {
-        var png = new PNG(file);
-        return png.decode(function (pixels) {
-          return fn(pixels);
-        });
+      return fs.readFile(path, (err, file) => {
+        const png = new PNG(file);
+        return png.decode(pixels => fn(pixels));
       });
     }
-  };
-  PNG.load = function load(path) {
+  }
+  static load(path) {
     {
-      var file = fs.readFileSync(path);
+      const file = fs.readFileSync(path);
       return new PNG(file);
     }
-  };
-  function PNG(data) {
-    var i;
+  }
+  constructor(data) {
+    let i;
     this.data = data;
@@ -31,4 +29,4 @@ this.pos = 8; // Skip the default header
     while (true) {
-      var chunkSize = this.readUInt32();
-      var section = '';
+      const chunkSize = this.readUInt32();
+      let section = '';
       for (i = 0; i < 4; i++) {
@@ -128,31 +126,31 @@ section += String.fromCharCode(this.data[this.pos++]);
   }
-  var _proto = PNG.prototype;
-  _proto.read = function read(bytes) {
-    var result = new Array(bytes);
-    for (var i = 0; i < bytes; i++) {
+  read(bytes) {
+    const result = new Array(bytes);
+    for (let i = 0; i < bytes; i++) {
       result[i] = this.data[this.pos++];
     }
     return result;
-  };
-  _proto.readUInt32 = function readUInt32() {
-    var b1 = this.data[this.pos++] << 24;
-    var b2 = this.data[this.pos++] << 16;
-    var b3 = this.data[this.pos++] << 8;
-    var b4 = this.data[this.pos++];
+  }
+  readUInt32() {
+    const b1 = this.data[this.pos++] << 24;
+    const b2 = this.data[this.pos++] << 16;
+    const b3 = this.data[this.pos++] << 8;
+    const b4 = this.data[this.pos++];
     return b1 | b2 | b3 | b4;
-  };
-  _proto.readUInt16 = function readUInt16() {
-    var b1 = this.data[this.pos++] << 8;
-    var b2 = this.data[this.pos++];
+  }
+  readUInt16() {
+    const b1 = this.data[this.pos++] << 8;
+    const b2 = this.data[this.pos++];
     return b1 | b2;
-  };
-  _proto.decodePixels = function decodePixels(fn) {
-    var _this = this;
-    return zlib.inflate(this.imgData, function (err, data) {
+  }
+  decodePixels(fn) {
+    return zlib.inflate(this.imgData, (err, data) => {
       if (err) throw err;
       var pos = 0;
-      var width = _this.width,
-        height = _this.height;
-      var pixelBytes = _this.pixelBitlength / 8;
-      var pixels = Buffer.alloc(width * height * pixelBytes);
+      const {
+        width,
+        height
+      } = this;
+      var pixelBytes = this.pixelBitlength / 8;
+      const pixels = Buffer.alloc(width * height * pixelBytes);
       function pass(x0, y0, dx, dy, singlePass) {
@@ -162,8 +160,8 @@ if (singlePass === void 0) {
         }
-        var w = Math.ceil((width - x0) / dx);
-        var h = Math.ceil((height - y0) / dy);
-        var scanlineLength = pixelBytes * w;
-        var buffer = singlePass ? pixels : Buffer.alloc(scanlineLength * h);
-        var row = 0;
-        var c = 0;
+        const w = Math.ceil((width - x0) / dx);
+        const h = Math.ceil((height - y0) / dy);
+        const scanlineLength = pixelBytes * w;
+        const buffer = singlePass ? pixels : Buffer.alloc(scanlineLength * h);
+        let row = 0;
+        let c = 0;
         while (row < h && pos < data.length) {
@@ -223,6 +221,6 @@ var byte;
                 }
-                var p = left + upper - upperLeft;
-                var pa = Math.abs(p - left);
-                var pb = Math.abs(p - upper);
-                var pc = Math.abs(p - upperLeft);
+                const p = left + upper - upperLeft;
+                const pa = Math.abs(p - left);
+                const pb = Math.abs(p - upper);
+                const pc = Math.abs(p - upperLeft);
                 if (pa <= pb && pa <= pc) {
@@ -239,9 +237,9 @@ paeth = left;
             default:
-              throw new Error("Invalid filter algorithm: " + data[pos - 1]);
+              throw new Error(`Invalid filter algorithm: ${data[pos - 1]}`);
           }
           if (!singlePass) {
-            var pixelsPos = ((y0 + row * dy) * width + x0) * pixelBytes;
-            var bufferPos = row * scanlineLength;
+            let pixelsPos = ((y0 + row * dy) * width + x0) * pixelBytes;
+            let bufferPos = row * scanlineLength;
             for (i = 0; i < w; i++) {
-              for (var j = 0; j < pixelBytes; j++) pixels[pixelsPos++] = buffer[bufferPos++];
+              for (let j = 0; j < pixelBytes; j++) pixels[pixelsPos++] = buffer[bufferPos++];
               pixelsPos += (dx - 1) * pixelBytes;
@@ -253,3 +251,3 @@ }
       }
-      if (_this.interlaceMethod === 1) {
+      if (this.interlaceMethod === 1) {
         /*
@@ -277,11 +275,15 @@ 1 6 4 6 2 6 4 6
     });
-  };
-  _proto.decodePalette = function decodePalette() {
-    var palette = this.palette;
-    var length = palette.length;
-    var transparency = this.transparency.indexed || [];
-    var ret = Buffer.alloc(transparency.length + length);
-    var pos = 0;
-    var c = 0;
-    for (var i = 0; i < length; i += 3) {
+  }
+  decodePalette() {
+    const {
+      palette
+    } = this;
+    const {
+      length
+    } = palette;
+    const transparency = this.transparency.indexed || [];
+    const ret = Buffer.alloc(transparency.length + length);
+    let pos = 0;
+    let c = 0;
+    for (let i = 0; i < length; i += 3) {
       var left;
@@ -294,9 +296,11 @@ ret[pos++] = palette[i];
     return ret;
-  };
-  _proto.copyToImageData = function copyToImageData(imageData, pixels) {
-    var j;
+  }
+  copyToImageData(imageData, pixels) {
+    let j;
     var k;
-    var colors = this.colors;
-    var palette = null;
-    var alpha = this.hasAlphaChannel;
+    let {
+      colors
+    } = this;
+    let palette = null;
+    let alpha = this.hasAlphaChannel;
     if (this.palette.length) {
@@ -307,10 +311,12 @@ palette = this._decodedPalette || (this._decodedPalette = this.decodePalette());
     }
-    var data = imageData.data || imageData;
-    var length = data.length;
-    var input = palette || pixels;
-    var i = j = 0;
+    const data = imageData.data || imageData;
+    const {
+      length
+    } = data;
+    const input = palette || pixels;
+    let i = j = 0;
     if (colors === 1) {
       while (i < length) {
         k = palette ? pixels[i / 4] * 4 : j;
-        var v = input[k++];
+        const v = input[k++];
         data[i++] = v;
@@ -332,14 +338,12 @@ data[i++] = v;
     }
-  };
-  _proto.decode = function decode(fn) {
-    var _this2 = this;
-    var ret = Buffer.alloc(this.width * this.height * 4);
-    return this.decodePixels(function (pixels) {
-      _this2.copyToImageData(ret, pixels);
+  }
+  decode(fn) {
+    const ret = Buffer.alloc(this.width * this.height * 4);
+    return this.decodePixels(pixels => {
+      this.copyToImageData(ret, pixels);
       return fn(ret);
     });
-  };
-  return PNG;
-}();
+  }
+}
 
 export { PNG as default };

package.json

 {
   "name": "@react-pdf/png-js",
   "description": "A PNG decoder in JS",
-  "version": "2.3.1",
+  "version": "3.0.0",
   "license": "MIT",
   "type": "module",
-  "main": "./lib/png-js.cjs",
-  "module": "./lib/png-js.js",
+  "main": "./lib/png-js.js",
   "browser": {
-    "./lib/png-js.js": "./lib/png-js.browser.js",
-    "./lib/png-js.cjs": "./lib/png-js.browser.cjs"
+    "./lib/png-js.js": "./lib/png-js.browser.js"
   },
-  "exports": {
-    ".": {
-      "import": "./lib/png-js.js",
-      "require": "./lib/png-js.cjs",
-      "default": "./lib/png-js.js"
-    }
-  },
   "repository": {
@@ -21,0 +12,0 @@ "type": "git",

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Total package byte prevSize

407207

decreased by-49.9%

Number of package files

5

decreased by-28.57%

Lines of code

11669

decreased by-49.97%

No dependency changes