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			112 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			JavaScript
		
	
		
		
			
		
	
	
			112 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			JavaScript
		
	
| 
											9 months ago
										 | /* | ||
|  | 	MIT License http://www.opensource.org/licenses/mit-license.php
 | ||
|  | 	Author Tobias Koppers @sokra | ||
|  | */ | ||
|  | 
 | ||
|  | "use strict"; | ||
|  | 
 | ||
|  | const { WEBASSEMBLY_MODULE_TYPE_SYNC } = require("../ModuleTypeConstants"); | ||
|  | const RuntimeGlobals = require("../RuntimeGlobals"); | ||
|  | const Template = require("../Template"); | ||
|  | const WasmChunkLoadingRuntimeModule = require("../wasm-sync/WasmChunkLoadingRuntimeModule"); | ||
|  | 
 | ||
|  | /** @typedef {import("../Chunk")} Chunk */ | ||
|  | /** @typedef {import("../Compiler")} Compiler */ | ||
|  | 
 | ||
|  | /** | ||
|  |  * @typedef {Object} ReadFileCompileWasmPluginOptions | ||
|  |  * @property {boolean} [mangleImports] mangle imports | ||
|  |  */ | ||
|  | 
 | ||
|  | // TODO webpack 6 remove
 | ||
|  | 
 | ||
|  | class ReadFileCompileWasmPlugin { | ||
|  | 	/** | ||
|  | 	 * @param {ReadFileCompileWasmPluginOptions} [options] options object | ||
|  | 	 */ | ||
|  | 	constructor(options = {}) { | ||
|  | 		this.options = options; | ||
|  | 	} | ||
|  | 
 | ||
|  | 	/** | ||
|  | 	 * Apply the plugin | ||
|  | 	 * @param {Compiler} compiler the compiler instance | ||
|  | 	 * @returns {void} | ||
|  | 	 */ | ||
|  | 	apply(compiler) { | ||
|  | 		compiler.hooks.thisCompilation.tap( | ||
|  | 			"ReadFileCompileWasmPlugin", | ||
|  | 			compilation => { | ||
|  | 				const globalWasmLoading = compilation.outputOptions.wasmLoading; | ||
|  | 				/** | ||
|  | 				 * @param {Chunk} chunk chunk | ||
|  | 				 * @returns {boolean} true, when wasm loading is enabled for the chunk | ||
|  | 				 */ | ||
|  | 				const isEnabledForChunk = chunk => { | ||
|  | 					const options = chunk.getEntryOptions(); | ||
|  | 					const wasmLoading = | ||
|  | 						options && options.wasmLoading !== undefined | ||
|  | 							? options.wasmLoading | ||
|  | 							: globalWasmLoading; | ||
|  | 					return wasmLoading === "async-node"; | ||
|  | 				}; | ||
|  | 				/** | ||
|  | 				 * @param {string} path path to wasm file | ||
|  | 				 * @returns {string} generated code to load the wasm file | ||
|  | 				 */ | ||
|  | 				const generateLoadBinaryCode = path => | ||
|  | 					Template.asString([ | ||
|  | 						"new Promise(function (resolve, reject) {", | ||
|  | 						Template.indent([ | ||
|  | 							"var { readFile } = require('fs');", | ||
|  | 							"var { join } = require('path');", | ||
|  | 							"", | ||
|  | 							"try {", | ||
|  | 							Template.indent([ | ||
|  | 								`readFile(join(__dirname, ${path}), function(err, buffer){`, | ||
|  | 								Template.indent([ | ||
|  | 									"if (err) return reject(err);", | ||
|  | 									"", | ||
|  | 									"// Fake fetch response", | ||
|  | 									"resolve({", | ||
|  | 									Template.indent(["arrayBuffer() { return buffer; }"]), | ||
|  | 									"});" | ||
|  | 								]), | ||
|  | 								"});" | ||
|  | 							]), | ||
|  | 							"} catch (err) { reject(err); }" | ||
|  | 						]), | ||
|  | 						"})" | ||
|  | 					]); | ||
|  | 
 | ||
|  | 				compilation.hooks.runtimeRequirementInTree | ||
|  | 					.for(RuntimeGlobals.ensureChunkHandlers) | ||
|  | 					.tap("ReadFileCompileWasmPlugin", (chunk, set) => { | ||
|  | 						if (!isEnabledForChunk(chunk)) return; | ||
|  | 						const chunkGraph = compilation.chunkGraph; | ||
|  | 						if ( | ||
|  | 							!chunkGraph.hasModuleInGraph( | ||
|  | 								chunk, | ||
|  | 								m => m.type === WEBASSEMBLY_MODULE_TYPE_SYNC | ||
|  | 							) | ||
|  | 						) { | ||
|  | 							return; | ||
|  | 						} | ||
|  | 						set.add(RuntimeGlobals.moduleCache); | ||
|  | 						compilation.addRuntimeModule( | ||
|  | 							chunk, | ||
|  | 							new WasmChunkLoadingRuntimeModule({ | ||
|  | 								generateLoadBinaryCode, | ||
|  | 								supportsStreaming: false, | ||
|  | 								mangleImports: this.options.mangleImports, | ||
|  | 								runtimeRequirements: set | ||
|  | 							}) | ||
|  | 						); | ||
|  | 					}); | ||
|  | 			} | ||
|  | 		); | ||
|  | 	} | ||
|  | } | ||
|  | 
 | ||
|  | module.exports = ReadFileCompileWasmPlugin; |