| "use strict"; |
| /* eslint-env browser, es6, node */ |
| |
| import { |
| defaults, |
| map_from_object, |
| map_to_object, |
| HOP, |
| } from "./utils/index.js"; |
| import { AST_Toplevel } from "./ast.js"; |
| import { parse } from "./parse.js"; |
| import { OutputStream } from "./output.js"; |
| import { Compressor } from "./compress/index.js"; |
| import { base54 } from "./scope.js"; |
| import { SourceMap } from "./sourcemap.js"; |
| import { |
| mangle_properties, |
| reserve_quoted_keys, |
| } from "./propmangle.js"; |
| |
| var to_ascii = typeof atob == "undefined" ? function(b64) { |
| return Buffer.from(b64, "base64").toString(); |
| } : atob; |
| var to_base64 = typeof btoa == "undefined" ? function(str) { |
| return Buffer.from(str).toString("base64"); |
| } : btoa; |
| |
| function read_source_map(code) { |
| var match = /(?:^|[^.])\/\/# sourceMappingURL=data:application\/json(;[\w=-]*)?;base64,([+/0-9A-Za-z]*=*)\s*$/.exec(code); |
| if (!match) { |
| console.warn("inline source map not found"); |
| return null; |
| } |
| return to_ascii(match[2]); |
| } |
| |
| function set_shorthand(name, options, keys) { |
| if (options[name]) { |
| keys.forEach(function(key) { |
| if (options[key]) { |
| if (typeof options[key] != "object") options[key] = {}; |
| if (!(name in options[key])) options[key][name] = options[name]; |
| } |
| }); |
| } |
| } |
| |
| function init_cache(cache) { |
| if (!cache) return; |
| if (!("props" in cache)) { |
| cache.props = new Map(); |
| } else if (!(cache.props instanceof Map)) { |
| cache.props = map_from_object(cache.props); |
| } |
| } |
| |
| function cache_to_json(cache) { |
| return { |
| props: map_to_object(cache.props) |
| }; |
| } |
| |
| async function minify(files, options) { |
| options = defaults(options, { |
| compress: {}, |
| ecma: undefined, |
| enclose: false, |
| ie8: false, |
| keep_classnames: undefined, |
| keep_fnames: false, |
| mangle: {}, |
| module: false, |
| nameCache: null, |
| output: null, |
| format: null, |
| parse: {}, |
| rename: undefined, |
| safari10: false, |
| sourceMap: false, |
| timings: false, |
| toplevel: false, |
| warnings: false, |
| wrap: false, |
| }, true); |
| var timings = options.timings && { |
| start: Date.now() |
| }; |
| if (options.keep_classnames === undefined) { |
| options.keep_classnames = options.keep_fnames; |
| } |
| if (options.rename === undefined) { |
| options.rename = options.compress && options.mangle; |
| } |
| if (options.output && options.format) { |
| throw new Error("Please only specify either output or format option, preferrably format."); |
| } |
| options.format = options.format || options.output || {}; |
| set_shorthand("ecma", options, [ "parse", "compress", "format" ]); |
| set_shorthand("ie8", options, [ "compress", "mangle", "format" ]); |
| set_shorthand("keep_classnames", options, [ "compress", "mangle" ]); |
| set_shorthand("keep_fnames", options, [ "compress", "mangle" ]); |
| set_shorthand("module", options, [ "parse", "compress", "mangle" ]); |
| set_shorthand("safari10", options, [ "mangle", "format" ]); |
| set_shorthand("toplevel", options, [ "compress", "mangle" ]); |
| set_shorthand("warnings", options, [ "compress" ]); // legacy |
| var quoted_props; |
| if (options.mangle) { |
| options.mangle = defaults(options.mangle, { |
| cache: options.nameCache && (options.nameCache.vars || {}), |
| eval: false, |
| ie8: false, |
| keep_classnames: false, |
| keep_fnames: false, |
| module: false, |
| properties: false, |
| reserved: [], |
| safari10: false, |
| toplevel: false, |
| }, true); |
| if (options.mangle.properties) { |
| if (typeof options.mangle.properties != "object") { |
| options.mangle.properties = {}; |
| } |
| if (options.mangle.properties.keep_quoted) { |
| quoted_props = options.mangle.properties.reserved; |
| if (!Array.isArray(quoted_props)) quoted_props = []; |
| options.mangle.properties.reserved = quoted_props; |
| } |
| if (options.nameCache && !("cache" in options.mangle.properties)) { |
| options.mangle.properties.cache = options.nameCache.props || {}; |
| } |
| } |
| init_cache(options.mangle.cache); |
| init_cache(options.mangle.properties.cache); |
| } |
| if (options.sourceMap) { |
| options.sourceMap = defaults(options.sourceMap, { |
| asObject: false, |
| content: null, |
| filename: null, |
| includeSources: false, |
| root: null, |
| url: null, |
| }, true); |
| } |
| if (timings) timings.parse = Date.now(); |
| var toplevel; |
| if (files instanceof AST_Toplevel) { |
| toplevel = files; |
| } else { |
| if (typeof files == "string") { |
| files = [ files ]; |
| } |
| options.parse = options.parse || {}; |
| options.parse.toplevel = null; |
| for (var name in files) if (HOP(files, name)) { |
| options.parse.filename = name; |
| options.parse.toplevel = parse(files[name], options.parse); |
| if (options.sourceMap && options.sourceMap.content == "inline") { |
| if (Object.keys(files).length > 1) |
| throw new Error("inline source map only works with singular input"); |
| options.sourceMap.content = read_source_map(files[name]); |
| } |
| } |
| toplevel = options.parse.toplevel; |
| } |
| if (quoted_props && options.mangle.properties.keep_quoted !== "strict") { |
| reserve_quoted_keys(toplevel, quoted_props); |
| } |
| if (options.wrap) { |
| toplevel = toplevel.wrap_commonjs(options.wrap); |
| } |
| if (options.enclose) { |
| toplevel = toplevel.wrap_enclose(options.enclose); |
| } |
| if (timings) timings.rename = Date.now(); |
| // disable rename on harmony due to expand_names bug in for-of loops |
| // https://github.com/mishoo/UglifyJS2/issues/2794 |
| if (0 && options.rename) { |
| toplevel.figure_out_scope(options.mangle); |
| toplevel.expand_names(options.mangle); |
| } |
| if (timings) timings.compress = Date.now(); |
| if (options.compress) { |
| toplevel = new Compressor(options.compress, { |
| mangle_options: options.mangle |
| }).compress(toplevel); |
| } |
| if (timings) timings.scope = Date.now(); |
| if (options.mangle) toplevel.figure_out_scope(options.mangle); |
| if (timings) timings.mangle = Date.now(); |
| if (options.mangle) { |
| base54.reset(); |
| toplevel.compute_char_frequency(options.mangle); |
| toplevel.mangle_names(options.mangle); |
| } |
| if (timings) timings.properties = Date.now(); |
| if (options.mangle && options.mangle.properties) { |
| toplevel = mangle_properties(toplevel, options.mangle.properties); |
| } |
| if (timings) timings.format = Date.now(); |
| var result = {}; |
| if (options.format.ast) { |
| result.ast = toplevel; |
| } |
| if (!HOP(options.format, "code") || options.format.code) { |
| if (options.sourceMap) { |
| options.format.source_map = await SourceMap({ |
| file: options.sourceMap.filename, |
| orig: options.sourceMap.content, |
| root: options.sourceMap.root |
| }); |
| if (options.sourceMap.includeSources) { |
| if (files instanceof AST_Toplevel) { |
| throw new Error("original source content unavailable"); |
| } else for (var name in files) if (HOP(files, name)) { |
| options.format.source_map.get().setSourceContent(name, files[name]); |
| } |
| } |
| } |
| delete options.format.ast; |
| delete options.format.code; |
| var stream = OutputStream(options.format); |
| toplevel.print(stream); |
| result.code = stream.get(); |
| if (options.sourceMap) { |
| if(options.sourceMap.asObject) { |
| result.map = options.format.source_map.get().toJSON(); |
| } else { |
| result.map = options.format.source_map.toString(); |
| } |
| if (options.sourceMap.url == "inline") { |
| var sourceMap = typeof result.map === "object" ? JSON.stringify(result.map) : result.map; |
| result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(sourceMap); |
| } else if (options.sourceMap.url) { |
| result.code += "\n//# sourceMappingURL=" + options.sourceMap.url; |
| } |
| } |
| } |
| if (options.nameCache && options.mangle) { |
| if (options.mangle.cache) options.nameCache.vars = cache_to_json(options.mangle.cache); |
| if (options.mangle.properties && options.mangle.properties.cache) { |
| options.nameCache.props = cache_to_json(options.mangle.properties.cache); |
| } |
| } |
| if (options.format && options.format.source_map) { |
| options.format.source_map.destroy(); |
| } |
| if (timings) { |
| timings.end = Date.now(); |
| result.timings = { |
| parse: 1e-3 * (timings.rename - timings.parse), |
| rename: 1e-3 * (timings.compress - timings.rename), |
| compress: 1e-3 * (timings.scope - timings.compress), |
| scope: 1e-3 * (timings.mangle - timings.scope), |
| mangle: 1e-3 * (timings.properties - timings.mangle), |
| properties: 1e-3 * (timings.format - timings.properties), |
| format: 1e-3 * (timings.end - timings.format), |
| total: 1e-3 * (timings.end - timings.start) |
| }; |
| } |
| return result; |
| } |
| |
| export { |
| minify, |
| to_ascii, |
| }; |
