webpack/lib/node/ReadFileCompileWasmTemplatePlugin.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const BaseWasmMainTemplatePlugin = require("../BaseWasmMainTemplatePlugin");
const WasmModuleTemplatePlugin = require("../wasm/WasmModuleTemplatePlugin");

class ReadFileCompileWasmTemplatePlugin {
	apply(compiler) {
		compiler.hooks.thisCompilation.tap(
			"ReadFileCompileWasmTemplatePlugin",
			compilation => {
				const generateLoadBinaryCode = path => `new Promise(function (resolve, reject) {
                      var {readFile} = require("fs");
                      var {join} = require("path");

                      try {
                        readFile(join(__dirname, ${
													path
												}), function(err, buffer){
                          if (err) return reject(err);
                          
                          // Fake fetch response
                          resolve({
                            arrayBuffer() {
                              return Promise.resolve(buffer)
                            }
                          });
                        });
                      } catch (err) {
                        reject(err);
                      }
                    });
                `;

				new BaseWasmMainTemplatePlugin().apply(
					compilation.mainTemplate,
					generateLoadBinaryCode
				);
				new WasmModuleTemplatePlugin().apply(
					compilation.moduleTemplates.javascript
				);
			}
		);
	}
}

module.exports = ReadFileCompileWasmTemplatePlugin;