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ProvidedDependency.js
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Thu, Feb 13, 19:10

ProvidedDependency.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Florent Cailhol @ooflorent
*/
"use strict";
const InitFragment = require("../InitFragment");
const makeSerializable = require("../util/makeSerializable");
const ModuleDependency = require("./ModuleDependency");
/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../ChunkGraph")} ChunkGraph */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../DependencyTemplates")} DependencyTemplates */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
/** @typedef {import("../util/Hash")} Hash */
/**
* @param {string[]|null} path the property path array
* @returns {string} the converted path
*/
const pathToString = path =>
path !== null && path.length > 0
? path.map(part => `[${JSON.stringify(part)}]`).join("")
: "";
class ProvidedDependency extends ModuleDependency {
constructor(request, identifier, path, range) {
super(request);
this.identifier = identifier;
this.path = path;
this.range = range;
}
get type() {
return "provided";
}
get category() {
return "esm";
}
/**
* Update the hash
* @param {Hash} hash hash to be updated
* @param {UpdateHashContext} context context
* @returns {void}
*/
updateHash(hash, context) {
super.updateHash(hash, context);
hash.update(this.identifier);
hash.update(this.path ? this.path.join(",") : "null");
}
serialize(context) {
const { write } = context;
write(this.identifier);
write(this.path);
super.serialize(context);
}
deserialize(context) {
const { read } = context;
this.identifier = read();
this.path = read();
super.deserialize(context);
}
}
makeSerializable(
ProvidedDependency,
"webpack/lib/dependencies/ProvidedDependency"
);
class ProvidedDependencyTemplate extends ModuleDependency.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,
initFragments,
runtimeRequirements
}
) {
const dep = /** @type {ProvidedDependency} */ (dependency);
initFragments.push(
new InitFragment(
`/* provided dependency */ var ${
dep.identifier
} = ${runtimeTemplate.moduleExports({
module: moduleGraph.getModule(dep),
chunkGraph,
request: dep.request,
runtimeRequirements
})}${pathToString(dep.path)};\n`,
InitFragment.STAGE_PROVIDES,
1,
`provided ${dep.identifier}`
)
);
source.replace(dep.range[0], dep.range[1] - 1, dep.identifier);
}
}
ProvidedDependency.Template = ProvidedDependencyTemplate;
module.exports = ProvidedDependency;

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