mirror of https://github.com/webpack/webpack.git
84 lines
3.0 KiB
JavaScript
84 lines
3.0 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
class ReadFileCompileWasmMainTemplatePlugin {
|
|
|
|
apply(mainTemplate) {
|
|
mainTemplate.plugin("local-vars", (source, chunk) => {
|
|
return mainTemplate.asString([
|
|
source,
|
|
"",
|
|
"// object to store loaded and loading wasm modules",
|
|
"var installedWasmModules = {};",
|
|
]);
|
|
});
|
|
mainTemplate.plugin("require-ensure", (source, chunk, hash) => {
|
|
const webassemblyModuleFilename = mainTemplate.outputOptions.webassemblyModuleFilename;
|
|
const chunkModuleMaps = chunk.getChunkModuleMaps(false, m => m.type.startsWith("webassembly"));
|
|
if(Object.keys(chunkModuleMaps.id).length === 0) return source;
|
|
const wasmModuleSrcPath = mainTemplate.getAssetPath(JSON.stringify(webassemblyModuleFilename), {
|
|
hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
|
|
hashWithLength: length => `" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`,
|
|
module: {
|
|
id: "\" + wasmModuleId + \"",
|
|
hash: `" + ${JSON.stringify(chunkModuleMaps.hash)}[wasmModuleId] + "`,
|
|
hashWithLength(length) {
|
|
const shortChunkHashMap = Object.create(null);
|
|
Object.keys(chunkModuleMaps.hash).forEach(wasmModuleId => {
|
|
if(typeof chunkModuleMaps.hash[wasmModuleId] === "string")
|
|
shortChunkHashMap[wasmModuleId] = chunkModuleMaps.hash[wasmModuleId].substr(0, length);
|
|
});
|
|
return `" + ${JSON.stringify(shortChunkHashMap)}[wasmModuleId] + "`;
|
|
}
|
|
}
|
|
});
|
|
return mainTemplate.asString([
|
|
source,
|
|
"",
|
|
"// ReadFile + compile chunk loading for webassembly",
|
|
"",
|
|
`var wasmModules = ${JSON.stringify(chunkModuleMaps.id)}[chunkId] || [];`,
|
|
"",
|
|
"wasmModules.forEach(function(wasmModuleId) {",
|
|
mainTemplate.indent([
|
|
"var installedWasmModuleData = installedWasmModules[wasmModuleId];",
|
|
"",
|
|
"// a Promise means \"currently loading\" or \"already loaded\".",
|
|
"promises.push(installedWasmModuleData ||",
|
|
mainTemplate.indent([
|
|
"(installedWasmModules[wasmModuleId] = new Promise(function(resolve, reject) {",
|
|
mainTemplate.indent([
|
|
`require('fs').readFile(require('path').resolve(__dirname, ${wasmModuleSrcPath}), function(err, buffer) {`,
|
|
mainTemplate.indent([
|
|
"if(err) return reject(err);",
|
|
"resolve(WebAssembly.compile(buffer));"
|
|
]),
|
|
"});"
|
|
]),
|
|
`}).then(function(module) { ${mainTemplate.requireFn}.w[wasmModuleId] = module; }))`
|
|
]),
|
|
");",
|
|
]),
|
|
"});",
|
|
]);
|
|
});
|
|
mainTemplate.plugin("require-extensions", (source, chunk) => {
|
|
return mainTemplate.asString([
|
|
source,
|
|
"",
|
|
"// object with all compiled WebAssmbly.Modules",
|
|
`${mainTemplate.requireFn}.w = {};`
|
|
]);
|
|
});
|
|
mainTemplate.plugin("hash", hash => {
|
|
hash.update("ReadFileCompileWasmMainTemplatePlugin");
|
|
hash.update("1");
|
|
hash.update(`${mainTemplate.outputOptions.webassemblyModuleFilename}`);
|
|
});
|
|
}
|
|
}
|
|
module.exports = ReadFileCompileWasmMainTemplatePlugin;
|