73 lines
2.1 KiB
JavaScript
73 lines
2.1 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const NullDependency = require("./NullDependency");
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/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
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/** @typedef {import("../Dependency")} Dependency */
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/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
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class RequireEnsureDependency extends NullDependency {
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constructor(block) {
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super();
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this.block = block;
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}
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get type() {
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return "require.ensure";
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}
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}
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RequireEnsureDependency.Template = class RequireEnsureDependencyTemplate extends NullDependency.Template {
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/**
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* @param {Dependency} dependency the dependency for which the template should be applied
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* @param {ReplaceSource} source the current replace source which can be modified
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* @param {DependencyTemplateContext} templateContext the context object
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* @returns {void}
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*/
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apply(dependency, source, { runtimeTemplate, chunkGraph }) {
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const dep = /** @type {RequireEnsureDependency} */ (dependency);
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const depBlock = dep.block;
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const promise = runtimeTemplate.blockPromise({
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chunkGraph,
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block: depBlock,
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message: "require.ensure"
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});
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const errorCallbackExists =
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depBlock.expr.arguments.length === 4 ||
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(!depBlock.chunkName && depBlock.expr.arguments.length === 3);
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const startBlock = `${promise}.then((`;
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const middleBlock = ").bind(null, __webpack_require__)).catch(";
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const endBlock = `).bind(null, __webpack_require__)).catch(${runtimeTemplate.onError()})`;
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source.replace(
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depBlock.expr.range[0],
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depBlock.expr.arguments[1].range[0] - 1,
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startBlock
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);
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if (errorCallbackExists) {
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source.replace(
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depBlock.expr.arguments[1].range[1],
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depBlock.expr.arguments[2].range[0] - 1,
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middleBlock
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);
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source.replace(
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depBlock.expr.arguments[2].range[1],
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depBlock.expr.range[1] - 1,
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")"
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);
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} else {
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source.replace(
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depBlock.expr.arguments[1].range[1],
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depBlock.expr.range[1] - 1,
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endBlock
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);
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}
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}
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};
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module.exports = RequireEnsureDependency;
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