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 { UsageState } = require("../ExportsInfo");
const InitFragment = require("../InitFragment");
const RuntimeGlobals = require("../RuntimeGlobals");
const makeSerializable = require("../util/makeSerializable");
const NullDependency = require("./NullDependency");
 
/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../Module")} Module */
 
class HarmonyCompatibilityDependency extends NullDependency {
    get type() {
        return "harmony export header";
    }
}
 
makeSerializable(
    HarmonyCompatibilityDependency,
    "webpack/lib/dependencies/HarmonyCompatibilityDependency"
);
 
HarmonyCompatibilityDependency.Template = class HarmonyExportDependencyTemplate extends (
    NullDependency.Template
) {
    /**
     * @param {Dependency} dependency the dependency for which the template should be applied
     * @param {ReplaceSource} source the current replace source which can be modified
     * @param {DependencyTemplateContext} templateContext the context object
     * @returns {void}
     */
    apply(
        dependency,
        source,
        {
            module,
            runtimeTemplate,
            moduleGraph,
            initFragments,
            runtimeRequirements,
            runtime,
            concatenationScope
        }
    ) {
        if (concatenationScope) return;
        const exportsInfo = moduleGraph.getExportsInfo(module);
        if (
            exportsInfo.getReadOnlyExportInfo("__esModule").getUsed(runtime) !==
            UsageState.Unused
        ) {
            const content = runtimeTemplate.defineEsModuleFlagStatement({
                exportsArgument: module.exportsArgument,
                runtimeRequirements
            });
            initFragments.push(
                new InitFragment(
                    content,
                    InitFragment.STAGE_HARMONY_EXPORTS,
                    0,
                    "harmony compatibility"
                )
            );
        }
        if (moduleGraph.isAsync(module)) {
            runtimeRequirements.add(RuntimeGlobals.module);
            runtimeRequirements.add(RuntimeGlobals.asyncModule);
            initFragments.push(
                new InitFragment(
                    runtimeTemplate.supportsArrowFunction()
                        ? `${RuntimeGlobals.asyncModule}(${module.moduleArgument}, async (__webpack_handle_async_dependencies__, __webpack_async_result__) => { try {\n`
                        : `${RuntimeGlobals.asyncModule}(${module.moduleArgument}, async function (__webpack_handle_async_dependencies__, __webpack_async_result__) { try {\n`,
                    InitFragment.STAGE_ASYNC_BOUNDARY,
                    0,
                    undefined,
                    `\n__webpack_async_result__();\n} catch(e) { __webpack_async_result__(e); } }${
                        module.buildMeta.async ? ", 1" : ""
                    });`
                )
            );
        }
    }
};
 
module.exports = HarmonyCompatibilityDependency;