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58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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import Operation from "../Operation";
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import * as esprima from "esprima";
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import escodegen from "escodegen";
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import esmangle from "esmangle";
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/**
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* JavaScript Minify operation
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*/
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class JavaScriptMinify extends Operation {
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/**
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* JavaScriptMinify constructor
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*/
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constructor() {
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super();
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this.name = "JavaScript Minify";
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this.module = "Code";
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this.description = "Compresses JavaScript code.";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [];
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}
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/**
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run(input, args) {
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let result = "";
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const AST = esprima.parseScript(input),
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optimisedAST = esmangle.optimize(AST, null),
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mangledAST = esmangle.mangle(optimisedAST);
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result = escodegen.generate(mangledAST, {
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format: {
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renumber: true,
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hexadecimal: true,
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escapeless: true,
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compact: true,
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semicolons: false,
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parentheses: false
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}
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});
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return result;
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}
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}
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export default JavaScriptMinify;
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