diff options
author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/uglify-js/tools/node.js | |
parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) |
node_modules
Diffstat (limited to 'node_modules/uglify-js/tools/node.js')
-rw-r--r-- | node_modules/uglify-js/tools/node.js | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/node_modules/uglify-js/tools/node.js b/node_modules/uglify-js/tools/node.js new file mode 100644 index 000000000..147751aeb --- /dev/null +++ b/node_modules/uglify-js/tools/node.js @@ -0,0 +1,320 @@ +// workaround for tty output truncation upon process.exit() +[process.stdout, process.stderr].forEach(function(stream){ + if (stream._handle && stream._handle.setBlocking) + stream._handle.setBlocking(true); +}); + +var path = require("path"); +var fs = require("fs"); + +var UglifyJS = exports; +var FILES = UglifyJS.FILES = [ + "../lib/utils.js", + "../lib/ast.js", + "../lib/parse.js", + "../lib/transform.js", + "../lib/scope.js", + "../lib/output.js", + "../lib/compress.js", + "../lib/sourcemap.js", + "../lib/mozilla-ast.js", + "../lib/propmangle.js", + "./exports.js", +].map(function(file){ + return require.resolve(file); +}); + +new Function("MOZ_SourceMap", "exports", FILES.map(function(file){ + return fs.readFileSync(file, "utf8"); +}).join("\n\n"))( + require("source-map"), + UglifyJS +); + +UglifyJS.AST_Node.warn_function = function(txt) { + console.error("WARN: %s", txt); +}; + +function read_source_map(code) { + var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code); + if (!match) { + UglifyJS.AST_Node.warn("inline source map not found"); + return null; + } + return JSON.parse(new Buffer(match[2], "base64")); +} + +UglifyJS.minify = function(files, options) { + options = UglifyJS.defaults(options, { + compress : {}, + fromString : false, + inSourceMap : null, + mangle : {}, + mangleProperties : false, + nameCache : null, + outFileName : null, + output : null, + outSourceMap : null, + parse : {}, + sourceMapInline : false, + sourceMapUrl : null, + sourceRoot : null, + spidermonkey : false, + warnings : false, + }); + UglifyJS.base54.reset(); + + var inMap = options.inSourceMap; + if (typeof inMap == "string" && inMap != "inline") { + inMap = JSON.parse(fs.readFileSync(inMap, "utf8")); + } + + // 1. parse + var toplevel = null, + sourcesContent = {}; + + if (options.spidermonkey) { + if (inMap == "inline") { + throw new Error("inline source map only works with built-in parser"); + } + toplevel = UglifyJS.AST_Node.from_mozilla_ast(files); + } else { + function addFile(file, fileUrl) { + var code = options.fromString + ? file + : fs.readFileSync(file, "utf8"); + if (inMap == "inline") { + inMap = read_source_map(code); + } + sourcesContent[fileUrl] = code; + toplevel = UglifyJS.parse(code, { + filename: fileUrl, + toplevel: toplevel, + bare_returns: options.parse ? options.parse.bare_returns : undefined + }); + } + if (!options.fromString) { + files = UglifyJS.simple_glob(files); + if (inMap == "inline" && files.length > 1) { + throw new Error("inline source map only works with singular input"); + } + } + [].concat(files).forEach(function (files, i) { + if (typeof files === 'string') { + addFile(files, options.fromString ? i : files); + } else { + for (var fileUrl in files) { + addFile(files[fileUrl], fileUrl); + } + } + }); + } + if (options.wrap) { + toplevel = toplevel.wrap_commonjs(options.wrap, options.exportAll); + } + + // 2. compress + if (options.compress) { + var compress = { warnings: options.warnings }; + UglifyJS.merge(compress, options.compress); + toplevel.figure_out_scope(options.mangle); + var sq = UglifyJS.Compressor(compress); + toplevel = sq.compress(toplevel); + } + + // 3. mangle properties + if (options.mangleProperties || options.nameCache) { + options.mangleProperties.cache = UglifyJS.readNameCache(options.nameCache, "props"); + toplevel = UglifyJS.mangle_properties(toplevel, options.mangleProperties); + UglifyJS.writeNameCache(options.nameCache, "props", options.mangleProperties.cache); + } + + // 4. mangle + if (options.mangle) { + toplevel.figure_out_scope(options.mangle); + toplevel.compute_char_frequency(options.mangle); + toplevel.mangle_names(options.mangle); + } + + // 5. output + var output = { max_line_len: 32000 }; + if (options.outSourceMap || options.sourceMapInline) { + output.source_map = UglifyJS.SourceMap({ + // prefer outFileName, otherwise use outSourceMap without .map suffix + file: options.outFileName || (typeof options.outSourceMap === 'string' ? options.outSourceMap.replace(/\.map$/i, '') : null), + orig: inMap, + root: options.sourceRoot + }); + if (options.sourceMapIncludeSources) { + for (var file in sourcesContent) { + if (sourcesContent.hasOwnProperty(file)) { + output.source_map.get().setSourceContent(file, sourcesContent[file]); + } + } + } + + } + if (options.output) { + UglifyJS.merge(output, options.output); + } + var stream = UglifyJS.OutputStream(output); + toplevel.print(stream); + + + var source_map = output.source_map; + if (source_map) { + source_map = source_map + ""; + } + + var mappingUrlPrefix = "\n//# sourceMappingURL="; + if (options.sourceMapInline) { + stream += mappingUrlPrefix + "data:application/json;charset=utf-8;base64," + new Buffer(source_map).toString("base64"); + } else if (options.outSourceMap && typeof options.outSourceMap === "string" && options.sourceMapUrl !== false) { + stream += mappingUrlPrefix + (typeof options.sourceMapUrl === "string" ? options.sourceMapUrl : options.outSourceMap); + } + + return { + code : stream + "", + map : source_map + }; +}; + +// UglifyJS.describe_ast = function() { +// function doitem(ctor) { +// var sub = {}; +// ctor.SUBCLASSES.forEach(function(ctor){ +// sub[ctor.TYPE] = doitem(ctor); +// }); +// var ret = {}; +// if (ctor.SELF_PROPS.length > 0) ret.props = ctor.SELF_PROPS; +// if (ctor.SUBCLASSES.length > 0) ret.sub = sub; +// return ret; +// } +// return doitem(UglifyJS.AST_Node).sub; +// } + +UglifyJS.describe_ast = function() { + var out = UglifyJS.OutputStream({ beautify: true }); + function doitem(ctor) { + out.print("AST_" + ctor.TYPE); + var props = ctor.SELF_PROPS.filter(function(prop){ + return !/^\$/.test(prop); + }); + if (props.length > 0) { + out.space(); + out.with_parens(function(){ + props.forEach(function(prop, i){ + if (i) out.space(); + out.print(prop); + }); + }); + } + if (ctor.documentation) { + out.space(); + out.print_string(ctor.documentation); + } + if (ctor.SUBCLASSES.length > 0) { + out.space(); + out.with_block(function(){ + ctor.SUBCLASSES.forEach(function(ctor, i){ + out.indent(); + doitem(ctor); + out.newline(); + }); + }); + } + }; + doitem(UglifyJS.AST_Node); + return out + ""; +}; + +function readReservedFile(filename, reserved) { + if (!reserved) { + reserved = { vars: [], props: [] }; + } + var data = fs.readFileSync(filename, "utf8"); + data = JSON.parse(data); + if (data.vars) { + data.vars.forEach(function(name){ + UglifyJS.push_uniq(reserved.vars, name); + }); + } + if (data.props) { + data.props.forEach(function(name){ + UglifyJS.push_uniq(reserved.props, name); + }); + } + return reserved; +} + +UglifyJS.readReservedFile = readReservedFile; + +UglifyJS.readDefaultReservedFile = function(reserved) { + return readReservedFile(require.resolve("./domprops.json"), reserved); +}; + +UglifyJS.readNameCache = function(filename, key) { + var cache = null; + if (filename) { + try { + var cache = fs.readFileSync(filename, "utf8"); + cache = JSON.parse(cache)[key]; + if (!cache) throw "init"; + cache.props = UglifyJS.Dictionary.fromObject(cache.props); + } catch(ex) { + cache = { + cname: -1, + props: new UglifyJS.Dictionary() + }; + } + } + return cache; +}; + +UglifyJS.writeNameCache = function(filename, key, cache) { + if (filename) { + var data; + try { + data = fs.readFileSync(filename, "utf8"); + data = JSON.parse(data); + } catch(ex) { + data = {}; + } + data[key] = { + cname: cache.cname, + props: cache.props.toObject() + }; + fs.writeFileSync(filename, JSON.stringify(data, null, 2), "utf8"); + } +}; + +// A file glob function that only supports "*" and "?" wildcards in the basename. +// Example: "foo/bar/*baz??.*.js" +// Argument `glob` may be a string or an array of strings. +// Returns an array of strings. Garbage in, garbage out. +UglifyJS.simple_glob = function simple_glob(glob) { + if (Array.isArray(glob)) { + return [].concat.apply([], glob.map(simple_glob)); + } + if (glob.match(/\*|\?/)) { + var dir = path.dirname(glob); + try { + var entries = fs.readdirSync(dir); + } catch (ex) {} + if (entries) { + var pattern = "^" + path.basename(glob) + .replace(/[.+^$[\]\\(){}]/g, "\\$&") + .replace(/\*/g, "[^/\\\\]*") + .replace(/\?/g, "[^/\\\\]") + "$"; + var mod = process.platform === "win32" ? "i" : ""; + var rx = new RegExp(pattern, mod); + var results = entries.filter(function(name) { + return rx.test(name); + }).map(function(name) { + return path.join(dir, name); + }); + if (results.length) return results; + } + } + return [ glob ]; +}; |