webpack
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Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
65 lines (55 loc) • 2.14 kB
JavaScript
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Alexander Akait @alexander-akait
*/
;
const RuntimeGlobals = require("../RuntimeGlobals");
const RuntimeModule = require("../RuntimeModule");
const Template = require("../Template");
/** @typedef {import("../Compilation")} Compilation */
class ToBinaryRuntimeModule extends RuntimeModule {
constructor() {
super("to binary");
}
/**
* @returns {string | null} runtime code
*/
generate() {
const compilation = /** @type {Compilation} */ (this.compilation);
const fn = RuntimeGlobals.toBinary;
const { runtimeTemplate } = compilation;
// Inspired by esbuild
const isNodePlatform = compilation.compiler.platform.node;
const isWebPlatform = compilation.compiler.platform.web;
const isNeutralPlatform = runtimeTemplate.isNeutralPlatform();
return Template.asString([
"// define to binary helper",
`${fn} = ${isNeutralPlatform ? "typeof Buffer !== 'undefined' ? " : ""}${
isNodePlatform || isNeutralPlatform
? `${runtimeTemplate.returningFunction("new Uint8Array(Buffer.from(base64, 'base64'))", "base64")}`
: ""
} ${isNeutralPlatform ? ": " : ""}${
isWebPlatform || isNeutralPlatform
? `(${runtimeTemplate.basicFunction("", [
"var table = new Uint8Array(128);",
"for (var i = 0; i < 64; i++) table[i < 26 ? i + 65 : i < 52 ? i + 71 : i < 62 ? i - 4 : i * 4 - 205] = i;",
`return ${runtimeTemplate.basicFunction("base64", [
"var n = base64.length, bytes = new Uint8Array((n - (base64[n - 1] == '=') - (base64[n - 2] == '=')) * 3 / 4 | 0);",
"for (var i = 0, j = 0; i < n;) {",
Template.indent([
"var c0 = table[base64.charCodeAt(i++)], c1 = table[base64.charCodeAt(i++)];",
"var c2 = table[base64.charCodeAt(i++)], c3 = table[base64.charCodeAt(i++)];",
"bytes[j++] = (c0 << 2) | (c1 >> 4);",
"bytes[j++] = (c1 << 4) | (c2 >> 2);",
"bytes[j++] = (c2 << 6) | c3;"
]),
"}",
"return bytes"
])}`
])})();`
: ""
}`
]);
}
}
module.exports = ToBinaryRuntimeModule;