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AssetParser.js
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Created
Tue, Jan 28, 05:01

AssetParser.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Yuta Hiroto @hiroppy
*/
"use strict";
const Parser = require("../Parser");
/** @typedef {import("../../declarations/plugins/AssetModulesPluginParser").AssetModulesPluginParserOptions} AssetModulesPluginParserOptions */
/** @typedef {import("../Parser").ParserState} ParserState */
/** @typedef {import("../Parser").PreparsedAst} PreparsedAst */
class AssetParser extends Parser {
/**
* @param {AssetModulesPluginParserOptions["dataUrlCondition"] | boolean} dataUrlCondition condition for inlining as DataUrl
*/
constructor(dataUrlCondition) {
super();
this.dataUrlCondition = dataUrlCondition;
}
/**
* @param {string | Buffer | PreparsedAst} source the source to parse
* @param {ParserState} state the parser state
* @returns {ParserState} the parser state
*/
parse(source, state) {
if (typeof source === "object" && !Buffer.isBuffer(source)) {
throw new Error("AssetParser doesn't accept preparsed AST");
}
state.module.buildInfo.strict = true;
state.module.buildMeta.exportsType = "default";
if (typeof this.dataUrlCondition === "function") {
state.module.buildInfo.dataUrl = this.dataUrlCondition(source, {
filename: state.module.matchResource || state.module.resource,
module: state.module
});
} else if (typeof this.dataUrlCondition === "boolean") {
state.module.buildInfo.dataUrl = this.dataUrlCondition;
} else if (
this.dataUrlCondition &&
typeof this.dataUrlCondition === "object"
) {
state.module.buildInfo.dataUrl =
Buffer.byteLength(source) <= this.dataUrlCondition.maxSize;
} else {
throw new Error("Unexpected dataUrlCondition type");
}
return state;
}
}
module.exports = AssetParser;

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