Commit

1 files changed, 487 insertions, 0 deletions

diff --git a/src/node_modules/terser/lib/cli.js b/src/node_modules/terser/lib/cli.js
new file mode 100644
index 0000000..2878a74
--- /dev/null
+++ b/src/node_modules/terser/lib/cli.js
@@ -0,0 +1,487 @@
+import { minify, _default_options } from "../main.js";
+import { parse } from "./parse.js";
+import {
+    AST_Assign,
+    AST_Array,
+    AST_Constant,
+    AST_Node,
+    AST_PropAccess,
+    AST_RegExp,
+    AST_Sequence,
+    AST_Symbol,
+    AST_Token,
+    walk
+} from "./ast.js";
+import { OutputStream } from "./output.js";
+
+export async function run_cli({ program, packageJson, fs, path }) {
+    const skip_keys = new Set([ "cname", "parent_scope", "scope", "uses_eval", "uses_with" ]);
+    var files = {};
+    var options = {
+        compress: false,
+        mangle: false
+    };
+    const default_options = await _default_options();
+    program.version(packageJson.name + " " + packageJson.version);
+    program.parseArgv = program.parse;
+    program.parse = undefined;
+
+    if (process.argv.includes("ast")) program.helpInformation = describe_ast;
+    else if (process.argv.includes("options")) program.helpInformation = function() {
+        var text = [];
+        for (var option in default_options) {
+            text.push("--" + (option === "sourceMap" ? "source-map" : option) + " options:");
+            text.push(format_object(default_options[option]));
+            text.push("");
+        }
+        return text.join("\n");
+    };
+
+    program.option("-p, --parse <options>", "Specify parser options.", parse_js());
+    program.option("-c, --compress [options]", "Enable compressor/specify compressor options.", parse_js());
+    program.option("-m, --mangle [options]", "Mangle names/specify mangler options.", parse_js());
+    program.option("--mangle-props [options]", "Mangle properties/specify mangler options.", parse_js());
+    program.option("-f, --format [options]", "Format options.", parse_js());
+    program.option("-b, --beautify [options]", "Alias for --format beautify=true.", parse_js());
+    program.option("-o, --output <file>", "Output file (default STDOUT).");
+    program.option("--comments [filter]", "Preserve copyright comments in the output.");
+    program.option("--config-file <file>", "Read minify() options from JSON file.");
+    program.option("-d, --define <expr>[=value]", "Global definitions.", parse_js("define"));
+    program.option("--ecma <version>", "Specify ECMAScript release: 5, 2015, 2016 or 2017...");
+    program.option("-e, --enclose [arg[,...][:value[,...]]]", "Embed output in a big function with configurable arguments and values.");
+    program.option("--ie8", "Support non-standard Internet Explorer 8.");
+    program.option("--keep-classnames", "Do not mangle/drop class names.");
+    program.option("--keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.");
+    program.option("--module", "Input is an ES6 module");
+    program.option("--name-cache <file>", "File to hold mangled name mappings.");
+    program.option("--rename", "Force symbol expansion.");
+    program.option("--no-rename", "Disable symbol expansion.");
+    program.option("--safari10", "Support non-standard Safari 10.");
+    program.option("--source-map [options]", "Enable source map/specify source map options.", parse_js());
+    program.option("--timings", "Display operations run time on STDERR.");
+    program.option("--toplevel", "Compress and/or mangle variables in toplevel scope.");
+    program.option("--wrap <name>", "Embed everything as a function with “exports” corresponding to “name” globally.");
+    program.arguments("[files...]").parseArgv(process.argv);
+    if (program.configFile) {
+        options = JSON.parse(read_file(program.configFile));
+    }
+    if (!program.output && program.sourceMap && program.sourceMap.url != "inline") {
+        fatal("ERROR: cannot write source map to STDOUT");
+    }
+
+    [
+        "compress",
+        "enclose",
+        "ie8",
+        "mangle",
+        "module",
+        "safari10",
+        "sourceMap",
+        "toplevel",
+        "wrap"
+    ].forEach(function(name) {
+        if (name in program) {
+            options[name] = program[name];
+        }
+    });
+
+    if ("ecma" in program) {
+        if (program.ecma != (program.ecma | 0)) fatal("ERROR: ecma must be an integer");
+        const ecma = program.ecma | 0;
+        if (ecma > 5 && ecma < 2015)
+            options.ecma = ecma + 2009;
+        else
+            options.ecma = ecma;
+    }
+    if (program.beautify || program.format) {
+        if (program.beautify && program.format) {
+            fatal("Please only specify one of --beautify or --format");
+        }
+        if (program.beautify) {
+            options.format = typeof program.beautify == "object" ? program.beautify : {};
+            if (!("beautify" in options.format)) {
+                options.format.beautify = true;
+            }
+        }
+        if (program.format) {
+            options.format = typeof program.format == "object" ? program.format : {};
+        }
+    }
+    if (program.comments) {
+        if (typeof options.format != "object") options.format = {};
+        options.format.comments = typeof program.comments == "string" ? (program.comments == "false" ? false : program.comments) : "some";
+    }
+    if (program.define) {
+        if (typeof options.compress != "object") options.compress = {};
+        if (typeof options.compress.global_defs != "object") options.compress.global_defs = {};
+        for (var expr in program.define) {
+            options.compress.global_defs[expr] = program.define[expr];
+        }
+    }
+    if (program.keepClassnames) {
+        options.keep_classnames = true;
+    }
+    if (program.keepFnames) {
+        options.keep_fnames = true;
+    }
+    if (program.mangleProps) {
+        if (program.mangleProps.domprops) {
+            delete program.mangleProps.domprops;
+        } else {
+            if (typeof program.mangleProps != "object") program.mangleProps = {};
+            if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
+        }
+        if (typeof options.mangle != "object") options.mangle = {};
+        options.mangle.properties = program.mangleProps;
+    }
+    if (program.nameCache) {
+        options.nameCache = JSON.parse(read_file(program.nameCache, "{}"));
+    }
+    if (program.output == "ast") {
+        options.format = {
+            ast: true,
+            code: false
+        };
+    }
+    if (program.parse) {
+        if (!program.parse.acorn && !program.parse.spidermonkey) {
+            options.parse = program.parse;
+        } else if (program.sourceMap && program.sourceMap.content == "inline") {
+            fatal("ERROR: inline source map only works with built-in parser");
+        }
+    }
+    if (~program.rawArgs.indexOf("--rename")) {
+        options.rename = true;
+    } else if (!program.rename) {
+        options.rename = false;
+    }
+
+    let convert_path = name => name;
+    if (typeof program.sourceMap == "object" && "base" in program.sourceMap) {
+        convert_path = function() {
+            var base = program.sourceMap.base;
+            delete options.sourceMap.base;
+            return function(name) {
+                return path.relative(base, name);
+            };
+        }();
+    }
+
+    let filesList;
+    if (options.files && options.files.length) {
+        filesList = options.files;
+
+        delete options.files;
+    } else if (program.args.length) {
+        filesList = program.args;
+    }
+
+    if (filesList) {
+        simple_glob(filesList).forEach(function(name) {
+            files[convert_path(name)] = read_file(name);
+        });
+    } else {
+        await new Promise((resolve) => {
+            var chunks = [];
+            process.stdin.setEncoding("utf8");
+            process.stdin.on("data", function(chunk) {
+                chunks.push(chunk);
+            }).on("end", function() {
+                files = [ chunks.join("") ];
+                resolve();
+            });
+            process.stdin.resume();
+        });
+    }
+
+    await run_cli();
+
+    function convert_ast(fn) {
+        return AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null));
+    }
+
+    async function run_cli() {
+        var content = program.sourceMap && program.sourceMap.content;
+        if (content && content !== "inline") {
+            options.sourceMap.content = read_file(content, content);
+        }
+        if (program.timings) options.timings = true;
+
+        try {
+            if (program.parse) {
+                if (program.parse.acorn) {
+                    files = convert_ast(function(toplevel, name) {
+                        return require("acorn").parse(files[name], {
+                            ecmaVersion: 2018,
+                            locations: true,
+                            program: toplevel,
+                            sourceFile: name,
+                            sourceType: options.module || program.parse.module ? "module" : "script"
+                        });
+                    });
+                } else if (program.parse.spidermonkey) {
+                    files = convert_ast(function(toplevel, name) {
+                        var obj = JSON.parse(files[name]);
+                        if (!toplevel) return obj;
+                        toplevel.body = toplevel.body.concat(obj.body);
+                        return toplevel;
+                    });
+                }
+            }
+        } catch (ex) {
+            fatal(ex);
+        }
+
+        let result;
+        try {
+            result = await minify(files, options);
+        } catch (ex) {
+            if (ex.name == "SyntaxError") {
+                print_error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
+                var col = ex.col;
+                var lines = files[ex.filename].split(/\r?\n/);
+                var line = lines[ex.line - 1];
+                if (!line && !col) {
+                    line = lines[ex.line - 2];
+                    col = line.length;
+                }
+                if (line) {
+                    var limit = 70;
+                    if (col > limit) {
+                        line = line.slice(col - limit);
+                        col = limit;
+                    }
+                    print_error(line.slice(0, 80));
+                    print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
+                }
+            }
+            if (ex.defs) {
+                print_error("Supported options:");
+                print_error(format_object(ex.defs));
+            }
+            fatal(ex);
+            return;
+        }
+
+        if (program.output == "ast") {
+            if (!options.compress && !options.mangle) {
+                result.ast.figure_out_scope({});
+            }
+            console.log(JSON.stringify(result.ast, function(key, value) {
+                if (value) switch (key) {
+                  case "thedef":
+                    return symdef(value);
+                  case "enclosed":
+                    return value.length ? value.map(symdef) : undefined;
+                  case "variables":
+                  case "functions":
+                  case "globals":
+                    return value.size ? collect_from_map(value, symdef) : undefined;
+                }
+                if (skip_keys.has(key)) return;
+                if (value instanceof AST_Token) return;
+                if (value instanceof Map) return;
+                if (value instanceof AST_Node) {
+                    var result = {
+                        _class: "AST_" + value.TYPE
+                    };
+                    if (value.block_scope) {
+                        result.variables = value.block_scope.variables;
+                        result.functions = value.block_scope.functions;
+                        result.enclosed = value.block_scope.enclosed;
+                    }
+                    value.CTOR.PROPS.forEach(function(prop) {
+                        result[prop] = value[prop];
+                    });
+                    return result;
+                }
+                return value;
+            }, 2));
+        } else if (program.output == "spidermonkey") {
+            try {
+                const minified = await minify(result.code, {
+                    compress: false,
+                    mangle: false,
+                    format: {
+                        ast: true,
+                        code: false
+                    }
+                });
+                console.log(JSON.stringify(minified.ast.to_mozilla_ast(), null, 2));
+            } catch (ex) {
+                fatal(ex);
+                return;
+            }
+        } else if (program.output) {
+            fs.writeFileSync(program.output, result.code);
+            if (options.sourceMap && options.sourceMap.url !== "inline" && result.map) {
+                fs.writeFileSync(program.output + ".map", result.map);
+            }
+        } else {
+            console.log(result.code);
+        }
+        if (program.nameCache) {
+            fs.writeFileSync(program.nameCache, JSON.stringify(options.nameCache));
+        }
+        if (result.timings) for (var phase in result.timings) {
+            print_error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s");
+        }
+    }
+
+    function fatal(message) {
+        if (message instanceof Error) message = message.stack.replace(/^\S*?Error:/, "ERROR:");
+        print_error(message);
+        process.exit(1);
+    }
+
+    // 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.
+    function simple_glob(glob) {
+        if (Array.isArray(glob)) {
+            return [].concat.apply([], glob.map(simple_glob));
+        }
+        if (glob && 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 ];
+    }
+
+    function read_file(path, default_value) {
+        try {
+            return fs.readFileSync(path, "utf8");
+        } catch (ex) {
+            if ((ex.code == "ENOENT" || ex.code == "ENAMETOOLONG") && default_value != null) return default_value;
+            fatal(ex);
+        }
+    }
+
+    function parse_js(flag) {
+        return function(value, options) {
+            options = options || {};
+            try {
+                walk(parse(value, { expression: true }), node => {
+                    if (node instanceof AST_Assign) {
+                        var name = node.left.print_to_string();
+                        var value = node.right;
+                        if (flag) {
+                            options[name] = value;
+                        } else if (value instanceof AST_Array) {
+                            options[name] = value.elements.map(to_string);
+                        } else if (value instanceof AST_RegExp) {
+                            value = value.value;
+                            options[name] = new RegExp(value.source, value.flags);
+                        } else {
+                            options[name] = to_string(value);
+                        }
+                        return true;
+                    }
+                    if (node instanceof AST_Symbol || node instanceof AST_PropAccess) {
+                        var name = node.print_to_string();
+                        options[name] = true;
+                        return true;
+                    }
+                    if (!(node instanceof AST_Sequence)) throw node;
+
+                    function to_string(value) {
+                        return value instanceof AST_Constant ? value.getValue() : value.print_to_string({
+                            quote_keys: true
+                        });
+                    }
+                });
+            } catch(ex) {
+                if (flag) {
+                    fatal("Error parsing arguments for '" + flag + "': " + value);
+                } else {
+                    options[value] = null;
+                }
+            }
+            return options;
+        };
+    }
+
+    function symdef(def) {
+        var ret = (1e6 + def.id) + " " + def.name;
+        if (def.mangled_name) ret += " " + def.mangled_name;
+        return ret;
+    }
+
+    function collect_from_map(map, callback) {
+        var result = [];
+        map.forEach(function (def) {
+            result.push(callback(def));
+        });
+        return result;
+    }
+
+    function format_object(obj) {
+        var lines = [];
+        var padding = "";
+        Object.keys(obj).map(function(name) {
+            if (padding.length < name.length) padding = Array(name.length + 1).join(" ");
+            return [ name, JSON.stringify(obj[name]) ];
+        }).forEach(function(tokens) {
+            lines.push("  " + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]);
+        });
+        return lines.join("\n");
+    }
+
+    function print_error(msg) {
+        process.stderr.write(msg);
+        process.stderr.write("\n");
+    }
+
+    function describe_ast() {
+        var out = OutputStream({ beautify: true });
+        function doitem(ctor) {
+            out.print("AST_" + ctor.TYPE);
+            const props = ctor.SELF_PROPS.filter(prop => !/^\$/.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) {
+                        out.indent();
+                        doitem(ctor);
+                        out.newline();
+                    });
+                });
+            }
+        }
+        doitem(AST_Node);
+        return out + "\n";
+    }
+}