diff options
Diffstat (limited to 'node_modules/terser/lib/minify.js')
| -rw-r--r-- | node_modules/terser/lib/minify.js | 382 |
1 files changed, 0 insertions, 382 deletions
diff --git a/node_modules/terser/lib/minify.js b/node_modules/terser/lib/minify.js deleted file mode 100644 index 6b40569d..00000000 --- a/node_modules/terser/lib/minify.js +++ /dev/null @@ -1,382 +0,0 @@ -"use strict"; -/* eslint-env browser, es6, node */ - -import { - defaults, - map_from_object, - map_to_object, - HOP, -} from "./utils/index.js"; -import { AST_Toplevel, AST_Node, walk, AST_Scope } 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, - mangle_private_properties, - reserve_quoted_keys, - find_annotated_props, -} from "./propmangle.js"; - -// to/from base64 functions -// Prefer built-in Buffer, if available, then use hack -// https://developer.mozilla.org/en-US/docs/Glossary/Base64#The_Unicode_Problem -var to_ascii = typeof Buffer !== "undefined" - ? (b64) => Buffer.from(b64, "base64").toString() - : (b64) => decodeURIComponent(escape(atob(b64))); -var to_base64 = typeof Buffer !== "undefined" - ? (str) => Buffer.from(str).toString("base64") - : (str) => btoa(unescape(encodeURIComponent(str))); - -function read_source_map(code) { - var match = /(?:^|[^.])\/\/# sourceMappingURL=data:application\/json(;[\w=-]*)?;base64,([+/0-9A-Za-z]*=*)\s*$/.exec(code); - if (!match) { - console.warn("inline source map not found"); - return null; - } - return to_ascii(match[2]); -} - -function set_shorthand(name, options, keys) { - if (options[name]) { - keys.forEach(function(key) { - if (options[key]) { - if (typeof options[key] != "object") options[key] = {}; - if (!(name in options[key])) options[key][name] = options[name]; - } - }); - } -} - -function init_cache(cache) { - if (!cache) return; - if (!("props" in cache)) { - cache.props = new Map(); - } else if (!(cache.props instanceof Map)) { - cache.props = map_from_object(cache.props); - } -} - -function cache_to_json(cache) { - return { - props: map_to_object(cache.props) - }; -} - -function log_input(files, options, fs, debug_folder) { - if (!(fs && fs.writeFileSync && fs.mkdirSync)) { - return; - } - - try { - fs.mkdirSync(debug_folder); - } catch (e) { - if (e.code !== "EEXIST") throw e; - } - - const log_path = `${debug_folder}/terser-debug-${(Math.random() * 9999999) | 0}.log`; - - options = options || {}; - - const options_str = JSON.stringify(options, (_key, thing) => { - if (typeof thing === "function") return "[Function " + thing.toString() + "]"; - if (thing instanceof RegExp) return "[RegExp " + thing.toString() + "]"; - return thing; - }, 4); - - const files_str = (file) => { - if (typeof file === "object" && options.parse && options.parse.spidermonkey) { - return JSON.stringify(file, null, 2); - } else if (typeof file === "object") { - return Object.keys(file) - .map((key) => key + ": " + files_str(file[key])) - .join("\n\n"); - } else if (typeof file === "string") { - return "```\n" + file + "\n```"; - } else { - return file; // What do? - } - }; - - fs.writeFileSync(log_path, "Options: \n" + options_str + "\n\nInput files:\n\n" + files_str(files) + "\n"); -} - -async function minify(files, options, _fs_module) { - if ( - _fs_module - && typeof process === "object" - && process.env - && typeof process.env.TERSER_DEBUG_DIR === "string" - ) { - log_input(files, options, _fs_module, process.env.TERSER_DEBUG_DIR); - } - - 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, - spidermonkey: 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, - nth_identifier: base54, - 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); - } - - // -- Parse phase -- - if (timings) timings.parse = Date.now(); - var toplevel; - if (files instanceof AST_Toplevel) { - toplevel = files; - } else { - if (typeof files == "string" || (options.parse.spidermonkey && !Array.isArray(files))) { - files = [ files ]; - } - options.parse = options.parse || {}; - options.parse.toplevel = null; - - if (options.parse.spidermonkey) { - options.parse.toplevel = AST_Node.from_mozilla_ast(Object.keys(files).reduce(function(toplevel, name) { - if (!toplevel) return files[name]; - toplevel.body = toplevel.body.concat(files[name].body); - return toplevel; - }, null)); - } else { - delete options.parse.spidermonkey; - - 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]); - } - } - } - if (options.parse.toplevel === null) { - throw new Error("no source file given"); - } - - toplevel = options.parse.toplevel; - } - if (quoted_props && options.mangle.properties.keep_quoted !== "strict") { - reserve_quoted_keys(toplevel, quoted_props); - } - var annotated_props; - if (options.mangle && options.mangle.properties) { - annotated_props = find_annotated_props(toplevel); - } - 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); - } - - // -- Compress phase -- - if (timings) timings.compress = Date.now(); - if (options.compress) { - toplevel = new Compressor(options.compress, { - mangle_options: options.mangle - }).compress(toplevel); - } - - // -- Mangle phase -- - if (timings) timings.scope = Date.now(); - if (options.mangle) toplevel.figure_out_scope(options.mangle); - if (timings) timings.mangle = Date.now(); - if (options.mangle) { - toplevel.compute_char_frequency(options.mangle); - toplevel.mangle_names(options.mangle); - toplevel = mangle_private_properties(toplevel, options.mangle); - } - if (timings) timings.properties = Date.now(); - if (options.mangle && options.mangle.properties) { - toplevel = mangle_properties(toplevel, options.mangle.properties, annotated_props); - } - - // Format phase - if (timings) timings.format = Date.now(); - var result = {}; - if (options.format.ast) { - result.ast = toplevel; - } - if (options.format.spidermonkey) { - result.ast = toplevel.to_mozilla_ast(); - } - let format_options; - if (!HOP(options.format, "code") || options.format.code) { - // Make a shallow copy so that we can modify without mutating the user's input. - format_options = {...options.format}; - if (!format_options.ast) { - // Destroy stuff to save RAM. (unless the deprecated `ast` option is on) - format_options._destroy_ast = true; - - walk(toplevel, node => { - if (node instanceof AST_Scope) { - node.variables = undefined; - node.enclosed = undefined; - node.parent_scope = undefined; - } - if (node.block_scope) { - node.block_scope.variables = undefined; - node.block_scope.enclosed = undefined; - node.parent_scope = undefined; - } - }); - } - - if (options.sourceMap) { - if (options.sourceMap.includeSources && files instanceof AST_Toplevel) { - throw new Error("original source content unavailable"); - } - format_options.source_map = await SourceMap({ - file: options.sourceMap.filename, - orig: options.sourceMap.content, - root: options.sourceMap.root, - files: options.sourceMap.includeSources ? files : null, - }); - } - delete format_options.ast; - delete format_options.code; - delete format_options.spidermonkey; - var stream = OutputStream(format_options); - toplevel.print(stream); - result.code = stream.get(); - if (options.sourceMap) { - Object.defineProperty(result, "map", { - configurable: true, - enumerable: true, - get() { - const map = format_options.source_map.getEncoded(); - return (result.map = options.sourceMap.asObject ? map : JSON.stringify(map)); - }, - set(value) { - Object.defineProperty(result, "map", { - value, - writable: true, - }); - } - }); - result.decoded_map = format_options.source_map.getDecoded(); - 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 (format_options && format_options.source_map) { - format_options.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, -}; |