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authorFlorian Dold <florian.dold@gmail.com>2017-08-14 05:01:11 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-08-14 05:02:09 +0200
commit363723fc84f7b8477592e0105aeb331ec9a017af (patch)
tree29f92724f34131bac64d6a318dd7e30612e631c7 /node_modules/uglify-js/lib/minify.js
parent5634e77ad96bfe1818f6b6ee70b7379652e5487f (diff)
node_modules
Diffstat (limited to 'node_modules/uglify-js/lib/minify.js')
-rw-r--r--node_modules/uglify-js/lib/minify.js220
1 files changed, 220 insertions, 0 deletions
diff --git a/node_modules/uglify-js/lib/minify.js b/node_modules/uglify-js/lib/minify.js
new file mode 100644
index 000000000..773e953ae
--- /dev/null
+++ b/node_modules/uglify-js/lib/minify.js
@@ -0,0 +1,220 @@
+"use strict";
+
+var to_ascii = typeof atob == "undefined" ? function(b64) {
+ return new Buffer(b64, "base64").toString();
+} : atob;
+var to_base64 = typeof btoa == "undefined" ? function(str) {
+ return new Buffer(str).toString("base64");
+} : btoa;
+
+function read_source_map(code) {
+ var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);
+ if (!match) {
+ AST_Node.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 (!("cname" in cache)) cache.cname = -1;
+ 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 {
+ cname: cache.cname,
+ props: cache.props.toObject()
+ };
+}
+
+function minify(files, options) {
+ var warn_function = AST_Node.warn_function;
+ try {
+ options = defaults(options, {
+ compress: {},
+ ie8: false,
+ keep_fnames: false,
+ mangle: {},
+ nameCache: null,
+ output: {},
+ parse: {},
+ sourceMap: false,
+ timings: false,
+ toplevel: false,
+ warnings: false,
+ wrap: false,
+ }, true);
+ var timings = options.timings && {
+ start: Date.now()
+ };
+ set_shorthand("ie8", options, [ "compress", "mangle", "output" ]);
+ set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
+ set_shorthand("toplevel", options, [ "compress", "mangle" ]);
+ set_shorthand("warnings", options, [ "compress" ]);
+ 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.warn_function) {
+ AST_Node.warn_function = function(warning) {
+ warnings.push(warning);
+ };
+ }
+ 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) {
+ reserve_quoted_keys(toplevel, quoted_props);
+ }
+ if (options.wrap) {
+ toplevel = toplevel.wrap_commonjs(options.wrap);
+ }
+ if (timings) timings.scope1 = Date.now();
+ if (options.compress) toplevel.figure_out_scope(options.mangle);
+ if (timings) timings.compress = Date.now();
+ if (options.compress) toplevel = new Compressor(options.compress).compress(toplevel);
+ if (timings) timings.scope2 = 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.output = Date.now();
+ var result = {};
+ if (options.output.ast) {
+ result.ast = toplevel;
+ }
+ if (!HOP(options.output, "code") || options.output.code) {
+ if (options.sourceMap) {
+ if (typeof options.sourceMap.content == "string") {
+ options.sourceMap.content = JSON.parse(options.sourceMap.content);
+ }
+ options.output.source_map = 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.output.source_map.get().setSourceContent(name, files[name]);
+ }
+ }
+ }
+ 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();
+ if (options.sourceMap.url == "inline") {
+ result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(result.map);
+ } else if (options.sourceMap.url) {
+ result.code += "\n//# sourceMappingURL=" + options.sourceMap.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.scope1 - timings.parse),
+ scope: 1e-3 * (timings.compress - timings.scope1 + timings.mangle - timings.scope2),
+ compress: 1e-3 * (timings.scope2 - timings.compress),
+ 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 };
+ } finally {
+ AST_Node.warn_function = warn_function;
+ }
+}