rollup-plugin-web-worker-loader - npm Package Compare versions

Comparing version 0.4.1 to 0.5.0

package.json

 {
   "name": "rollup-plugin-web-worker-loader",
-  "version": "0.4.1",
+  "version": "0.5.0",
   "description": "Rollup plugin to handle Web Workers",
@@ -5,0 +5,0 @@ "main": "src/index.js",

README.md

@@ -43,5 +43,11 @@ # rollup-plugin-web-worker-loader
 webWorkerLoader({
-    sourcemap?: boolean, // when inlined, should a source map be included in the final output. Default: false
-    inline?: boolean,    // should the worker code be inlined (Base64). Default: true
-    loadPath?: string    // this options is useful when the worker scripts need to be loaded from another folder. Default: ''
+    sourcemap?: boolean,        // when inlined, should a source map be included in the final output. Default: false
+    
+    inline?: boolean,           // should the worker code be inlined (Base64). Default: true
+    
+    preserveSource?: boolean,   // when inlined and this option is enabled, the full source code is included in the
+                                // built file, otherwise it's embedded as a base64 string. Default: false
+                                
+    loadPath?: string           // this options is useful when the worker scripts need to be loaded from another folder.
+                                // Default: ''
 })
@@ -48,0 +54,0 @@ ```

src/index.js

@@ -12,2 +12,3 @@ const path = require('path');
     const loadPath = config && config.hasOwnProperty('loadPath') ? config.loadPath : '';
+    const preserveSource = config && config.hasOwnProperty('preserveSource') ? config.preserveSource : false;
     let inline = config && config.hasOwnProperty('inline') ? config.inline : true;
@@ -52,13 +53,14 @@
                 const target = require.resolve(name, { paths });
-                if (target && !idMap.has(importee)) {
-                    const inputOptions = Object.assign({}, projectOptions, {
-                        input: target,
-                    });
+                if (target) {
+                    if (!idMap.has(target)) {
+                        const inputOptions = Object.assign({}, projectOptions, {
+                            input: target,
+                        });
 
-                    idMap.set(target, {
-                        workerID: `web-worker-${idMap.size}.js`,
-                        chunk: null,
-                        inputOptions,
-                    });
-
+                        idMap.set(target, {
+                            workerID: `web-worker-${idMap.size}.js`,
+                            chunk: null,
+                            inputOptions,
+                        });
+                    }
                     return target;
@@ -120,3 +122,3 @@ }
                                 if (inline) {
-                                    source = utils.extractSource(chunk.code, chunk.exports);
+                                    source = utils.extractSource(chunk.code, chunk.exports, preserveSource);
                                     map = null;
@@ -131,3 +133,3 @@ if (sourcemap) {
                                 }
-                                resolve({code: utils.buildWorkerCode(source, map, inline)});
+                                resolve({code: utils.buildWorkerCode(source, map, inline, preserveSource)});
                             } else {
@@ -134,0 +136,0 @@ resolve(null);

src/utils.js

 const path = require('path');
 
-function extractSource(code, exports) {
+function extractSource(code, exports, asFunction = true) {
     let source;
@@ -27,8 +27,12 @@ if (exports.length) {
 
-    return `/* rollup-plugin-web-worker-loader */function () {\n${source}}\n`;
+    if (asFunction) {
+        return `/* rollup-plugin-web-worker-loader */function () {\n${source}}\n`;
+    }
+    return `/* rollup-plugin-web-worker-loader */\n${source}\n`;
 }
 
-function buildWorkerCode(source, sourcemap = null, inline = true) {
+function buildWorkerCode(source, sourcemap = null, inline = true, preserveSource = false) {
     if (inline) {
-        return `\
+        if (preserveSource) {
+            return `\
 /* eslint-disable */\n\
@@ -39,2 +43,10 @@ import {createInlineWorkerFactory} from 'rollup-plugin-web-worker-loader-helper';\n\
 /* eslint-enable */\n`;
+        }
+
+        return `\
+/* eslint-disable */\n\
+import {createBase64WorkerFactory} from 'rollup-plugin-web-worker-loader-helper';\n\
+const WorkerFactory = createBase64WorkerFactory('${Buffer.from(source).toString('base64')}', ${sourcemap ? `'${sourcemap.toUrl()}'` : 'null'});\n\
+export default WorkerFactory;\n\
+/* eslint-enable */\n`;
     }
@@ -41,0 +53,0 @@

src/WorkerLoaderHelper.js

@@ -42,1 +42,22 @@ const kIsNodeJS = Object.prototype.toString.call(typeof process !== 'undefined' ? process : 0) === '[object process]';
 }
+
+export function createBase64WorkerFactory(base64, sourcemap = null) {
+    const source = kIsNodeJS ? Buffer.from(base64, 'base64').toString('ascii') : atob(base64);
+    const start = source.indexOf('\n', 10) + 1;
+    const body = source.substring(start) + (sourcemap ? `//# sourceMappingURL=${sourcemap}` : '');
+
+    if (kIsNodeJS) {
+        /* node.js */
+        const Worker = kRequire('worker_threads').Worker; // eslint-disable-line
+        return function WorkerFactory(options) {
+            return new Worker(body, Object.assign({}, options, { eval: true }));
+        };
+    }
+
+    /* browser */
+    const blob = new Blob([body], { type: 'application/javascript' });
+    const url = URL.createObjectURL(blob);
+    return function WorkerFactory(options) {
+        return new Worker(url, options);
+    };
+}

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Improved metrics

Total package byte prevSize

37170

increased by5.29%

Lines of code

322

increased by11.03%

Number of lines in readme file

72

increased by9.09%

No dependency changes