| "use strict"; |
| |
| var to_ascii, to_base64; |
| if (typeof Buffer == "undefined") { |
| to_ascii = atob; |
| to_base64 = btoa; |
| } else if (typeof Buffer.alloc == "undefined") { |
| to_ascii = function(b64) { |
| return new Buffer(b64, "base64").toString(); |
| }; |
| to_base64 = function(str) { |
| return new Buffer(str).toString("base64"); |
| }; |
| } else { |
| to_ascii = function(b64) { |
| return Buffer.from(b64, "base64").toString(); |
| }; |
| to_base64 = function(str) { |
| return Buffer.from(str).toString("base64"); |
| }; |
| } |
| |
| function read_source_map(name, toplevel) { |
| var comments = toplevel.end.comments_after; |
| for (var i = comments.length; --i >= 0;) { |
| var comment = comments[i]; |
| if (comment.type != "comment1") break; |
| var match = /^# ([^\s=]+)=(\S+)\s*$/.exec(comment.value); |
| if (!match) break; |
| if (match[1] == "sourceMappingURL") { |
| match = /^data:application\/json(;.*?)?;base64,(\S+)$/.exec(match[2]); |
| if (!match) break; |
| return to_ascii(match[2]); |
| } |
| } |
| AST_Node.warn("inline source map not found: " + name); |
| } |
| |
| function parse_source_map(content) { |
| try { |
| return JSON.parse(content); |
| } catch (ex) { |
| throw new Error("invalid input source map: " + content); |
| } |
| } |
| |
| 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 Dictionary(); |
| } else if (!(cache.props instanceof Dictionary)) { |
| cache.props = Dictionary.fromObject(cache.props); |
| } |
| } |
| |
| function to_json(cache) { |
| return { |
| props: cache.props.toObject() |
| }; |
| } |
| |
| function minify(files, options) { |
| try { |
| options = defaults(options, { |
| compress: {}, |
| enclose: false, |
| ie8: false, |
| keep_fnames: false, |
| mangle: {}, |
| nameCache: null, |
| output: {}, |
| parse: {}, |
| rename: undefined, |
| sourceMap: false, |
| timings: false, |
| toplevel: false, |
| warnings: false, |
| wrap: false, |
| }, true); |
| var timings = options.timings && { |
| start: Date.now() |
| }; |
| if (options.rename === undefined) { |
| options.rename = options.compress && options.mangle; |
| } |
| set_shorthand("ie8", options, [ "compress", "mangle", "output" ]); |
| set_shorthand("keep_fnames", options, [ "compress", "mangle" ]); |
| set_shorthand("toplevel", options, [ "compress", "mangle" ]); |
| var quoted_props; |
| if (options.mangle) { |
| options.mangle = defaults(options.mangle, { |
| cache: options.nameCache && (options.nameCache.vars || {}), |
| eval: false, |
| ie8: false, |
| keep_fnames: false, |
| properties: false, |
| reserved: [], |
| 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, { |
| content: null, |
| filename: null, |
| includeSources: false, |
| root: null, |
| url: null, |
| }, true); |
| } |
| var warnings = []; |
| if (options.warnings) AST_Node.log_function(function(warning) { |
| warnings.push(warning); |
| }, options.warnings == "verbose"); |
| if (timings) timings.parse = Date.now(); |
| var source_maps, toplevel; |
| if (files instanceof AST_Toplevel) { |
| toplevel = files; |
| } else { |
| if (typeof files == "string") { |
| files = [ files ]; |
| } |
| options.parse = options.parse || {}; |
| options.parse.toplevel = null; |
| var source_map_content = options.sourceMap && options.sourceMap.content; |
| if (typeof source_map_content == "string" && source_map_content != "inline") { |
| source_map_content = parse_source_map(source_map_content); |
| } |
| source_maps = source_map_content && Object.create(null); |
| for (var name in files) if (HOP(files, name)) { |
| options.parse.filename = name; |
| options.parse.toplevel = toplevel = parse(files[name], options.parse); |
| if (source_maps) { |
| if (source_map_content == "inline") { |
| var inlined_content = read_source_map(name, toplevel); |
| if (inlined_content) { |
| source_maps[name] = parse_source_map(inlined_content); |
| } |
| } else { |
| source_maps[name] = source_map_content; |
| } |
| } |
| } |
| } |
| if (quoted_props) { |
| reserve_quoted_keys(toplevel, quoted_props); |
| } |
| [ "enclose", "wrap" ].forEach(function(action) { |
| var option = options[action]; |
| if (!option) return; |
| var orig = toplevel.print_to_string().slice(0, -1); |
| toplevel = toplevel[action](option); |
| files[toplevel.start.file] = toplevel.print_to_string().replace(orig, ""); |
| }); |
| if (timings) timings.rename = Date.now(); |
| if (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).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) { |
| 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.output = Date.now(); |
| var result = {}; |
| if (options.output.ast) { |
| result.ast = toplevel; |
| } |
| if (!HOP(options.output, "code") || options.output.code) { |
| if (options.sourceMap) { |
| options.output.source_map = SourceMap({ |
| file: options.sourceMap.filename, |
| orig: source_maps, |
| 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.output.source_map.get().setSourceContent(name, files[name]); |
| } |
| } else { |
| options.output.source_map.get()._sourcesContents = null; |
| } |
| } |
| delete options.output.ast; |
| delete options.output.code; |
| var stream = OutputStream(options.output); |
| toplevel.print(stream); |
| result.code = stream.get(); |
| if (options.sourceMap) { |
| result.map = options.output.source_map.toString(); |
| var url = options.sourceMap.url; |
| if (url) { |
| result.code = result.code.replace(/\n\/\/# sourceMappingURL=\S+\s*$/, ""); |
| if (url == "inline") { |
| result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(result.map); |
| } else { |
| result.code += "\n//# sourceMappingURL=" + url; |
| } |
| } |
| } |
| } |
| if (options.nameCache && options.mangle) { |
| if (options.mangle.cache) options.nameCache.vars = to_json(options.mangle.cache); |
| if (options.mangle.properties && options.mangle.properties.cache) { |
| options.nameCache.props = to_json(options.mangle.properties.cache); |
| } |
| } |
| 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.output - timings.properties), |
| output: 1e-3 * (timings.end - timings.output), |
| total: 1e-3 * (timings.end - timings.start) |
| }; |
| } |
| if (warnings.length) { |
| result.warnings = warnings; |
| } |
| return result; |
| } catch (ex) { |
| return { error: ex }; |
| } |
| } |
