init

马宇豪

2024-07-16 f591c27b57e2418c9495bc02ae8cfff84d35bc18

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
 
"use strict";
 
const RuntimeGlobals = require("../RuntimeGlobals");
 
/** @typedef {import("../Module")} Module */
/** @typedef {"exports" | "module.exports" | "this" | "Object.defineProperty(exports)" | "Object.defineProperty(module.exports)" | "Object.defineProperty(this)"} CommonJSDependencyBaseKeywords */
 
/**
 * @param {CommonJSDependencyBaseKeywords} depBase commonjs dependency base
 * @param {Module} module module
 * @param {Set<string>} runtimeRequirements runtime requirements
 * @returns {[string, string]} type and base
 */
exports.handleDependencyBase = (depBase, module, runtimeRequirements) => {
    let base = undefined;
    let type;
    switch (depBase) {
        case "exports":
            runtimeRequirements.add(RuntimeGlobals.exports);
            base = module.exportsArgument;
            type = "expression";
            break;
        case "module.exports":
            runtimeRequirements.add(RuntimeGlobals.module);
            base = `${module.moduleArgument}.exports`;
            type = "expression";
            break;
        case "this":
            runtimeRequirements.add(RuntimeGlobals.thisAsExports);
            base = "this";
            type = "expression";
            break;
        case "Object.defineProperty(exports)":
            runtimeRequirements.add(RuntimeGlobals.exports);
            base = module.exportsArgument;
            type = "Object.defineProperty";
            break;
        case "Object.defineProperty(module.exports)":
            runtimeRequirements.add(RuntimeGlobals.module);
            base = `${module.moduleArgument}.exports`;
            type = "Object.defineProperty";
            break;
        case "Object.defineProperty(this)":
            runtimeRequirements.add(RuntimeGlobals.thisAsExports);
            base = "this";
            type = "Object.defineProperty";
            break;
        default:
            throw new Error(`Unsupported base ${depBase}`);
    }
 
    return [type, base];
};