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RequireEnsureDependency.js
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Sat, Feb 15, 14:07

RequireEnsureDependency.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const RuntimeGlobals = require("../RuntimeGlobals");
const makeSerializable = require("../util/makeSerializable");
const NullDependency = require("./NullDependency");
/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../AsyncDependenciesBlock")} AsyncDependenciesBlock */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
class RequireEnsureDependency extends NullDependency {
constructor(range, contentRange, errorHandlerRange) {
super();
this.range = range;
this.contentRange = contentRange;
this.errorHandlerRange = errorHandlerRange;
}
get type() {
return "require.ensure";
}
serialize(context) {
const { write } = context;
write(this.range);
write(this.contentRange);
write(this.errorHandlerRange);
super.serialize(context);
}
deserialize(context) {
const { read } = context;
this.range = read();
this.contentRange = read();
this.errorHandlerRange = read();
super.deserialize(context);
}
}
makeSerializable(
RequireEnsureDependency,
"webpack/lib/dependencies/RequireEnsureDependency"
);
RequireEnsureDependency.Template = class RequireEnsureDependencyTemplate 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,
{ runtimeTemplate, moduleGraph, chunkGraph, runtimeRequirements }
) {
const dep = /** @type {RequireEnsureDependency} */ (dependency);
const depBlock = /** @type {AsyncDependenciesBlock} */ (moduleGraph.getParentBlock(
dep
));
const promise = runtimeTemplate.blockPromise({
chunkGraph,
block: depBlock,
message: "require.ensure",
runtimeRequirements
});
const range = dep.range;
const contentRange = dep.contentRange;
const errorHandlerRange = dep.errorHandlerRange;
source.replace(range[0], contentRange[0] - 1, `${promise}.then((`);
if (errorHandlerRange) {
source.replace(
contentRange[1],
errorHandlerRange[0] - 1,
").bind(null, __webpack_require__)).catch("
);
source.replace(errorHandlerRange[1], range[1] - 1, ")");
} else {
source.replace(
contentRange[1],
range[1] - 1,
`).bind(null, __webpack_require__)).catch(${RuntimeGlobals.uncaughtErrorHandler})`
);
}
}
};
module.exports = RequireEnsureDependency;

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