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HarmonyAcceptDependency.js
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Sun, Feb 9, 22:58

HarmonyAcceptDependency.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const Template = require("../Template");
const makeSerializable = require("../util/makeSerializable");
const HarmonyImportDependency = require("./HarmonyImportDependency");
const NullDependency = require("./NullDependency");
/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("./HarmonyAcceptImportDependency")} HarmonyAcceptImportDependency */
class HarmonyAcceptDependency extends NullDependency {
/**
* @param {[number, number]} range expression range
* @param {HarmonyAcceptImportDependency[]} dependencies import dependencies
* @param {boolean} hasCallback true, if the range wraps an existing callback
*/
constructor(range, dependencies, hasCallback) {
super();
this.range = range;
this.dependencies = dependencies;
this.hasCallback = hasCallback;
}
get type() {
return "accepted harmony modules";
}
serialize(context) {
const { write } = context;
write(this.range);
write(this.dependencies);
write(this.hasCallback);
super.serialize(context);
}
deserialize(context) {
const { read } = context;
this.range = read();
this.dependencies = read();
this.hasCallback = read();
super.deserialize(context);
}
}
makeSerializable(
HarmonyAcceptDependency,
"webpack/lib/dependencies/HarmonyAcceptDependency"
);
HarmonyAcceptDependency.Template = class HarmonyAcceptDependencyTemplate 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, templateContext) {
const dep = /** @type {HarmonyAcceptDependency} */ (dependency);
const {
module,
runtime,
runtimeRequirements,
runtimeTemplate,
moduleGraph,
chunkGraph
} = templateContext;
const content = dep.dependencies
.map(dependency => {
const referencedModule = moduleGraph.getModule(dependency);
return {
dependency,
runtimeCondition: referencedModule
? HarmonyImportDependency.Template.getImportEmittedRuntime(
module,
referencedModule
)
: false
};
})
.filter(({ runtimeCondition }) => runtimeCondition !== false)
.map(({ dependency, runtimeCondition }) => {
const condition = runtimeTemplate.runtimeConditionExpression({
chunkGraph,
runtime,
runtimeCondition,
runtimeRequirements
});
const s = dependency.getImportStatement(true, templateContext);
const code = s[0] + s[1];
if (condition !== "true") {
return `if (${condition}) {\n${Template.indent(code)}\n}\n`;
}
return code;
})
.join("");
if (dep.hasCallback) {
if (runtimeTemplate.supportsArrowFunction()) {
source.insert(
dep.range[0],
`__WEBPACK_OUTDATED_DEPENDENCIES__ => { ${content}(`
);
source.insert(dep.range[1], ")(__WEBPACK_OUTDATED_DEPENDENCIES__); }");
} else {
source.insert(
dep.range[0],
`function(__WEBPACK_OUTDATED_DEPENDENCIES__) { ${content}(`
);
source.insert(
dep.range[1],
")(__WEBPACK_OUTDATED_DEPENDENCIES__); }.bind(this)"
);
}
return;
}
const arrow = runtimeTemplate.supportsArrowFunction();
source.insert(
dep.range[1] - 0.5,
`, ${arrow ? "() =>" : "function()"} { ${content} }`
);
}
};
module.exports = HarmonyAcceptDependency;

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