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app_vue/node_modules/terser/lib/minify.js

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+"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");
+}
+
+function* minify_sync_or_async(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.block_scope.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 = yield* 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;
+}
+
+async function minify(files, options, _fs_module) {
+    const gen = minify_sync_or_async(files, options, _fs_module);
+
+    let yielded;
+    let val;
+    do {
+        val = gen.next(await yielded);
+        yielded = val.value;
+    } while (!val.done);
+
+    return val.value;
+}
+
+function minify_sync(files, options, _fs_module) {
+    const gen = minify_sync_or_async(files, options, _fs_module);
+
+    let yielded;
+    let val;
+    do {
+        if (yielded && typeof yielded.then === "function") {
+            throw new Error("minify_sync cannot be used with the legacy source-map module");
+        }
+        val = gen.next(yielded);
+        yielded = val.value;
+    } while (!val.done);
+
+    return val.value;
+}
+
+export {
+  minify,
+  minify_sync,
+  to_ascii,
+};