Converted the core to ES modules

src/core/operations/legacy/JS.js

@@ -0,0 +1,164 @@
+import * as esprima from "esprima";
+import escodegen from "escodegen";
+import esmangle from "esmangle";
+
+
+/**
+ * JavaScript operations.
+ *
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ *
+ * @namespace
+ */
+const JS = {
+
+    /**
+     * @constant
+     * @default
+     */
+    PARSE_LOC: false,
+    /**
+     * @constant
+     * @default
+     */
+    PARSE_RANGE: false,
+    /**
+     * @constant
+     * @default
+     */
+    PARSE_TOKENS: false,
+    /**
+     * @constant
+     * @default
+     */
+    PARSE_COMMENT: false,
+    /**
+     * @constant
+     * @default
+     */
+    PARSE_TOLERANT: false,
+
+    /**
+     * JavaScript Parser operation.
+     *
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    runParse: function (input, args) {
+        let parseLoc = args[0],
+            parseRange = args[1],
+            parseTokens = args[2],
+            parseComment = args[3],
+            parseTolerant = args[4],
+            result = {},
+            options = {
+                loc:      parseLoc,
+                range:    parseRange,
+                tokens:   parseTokens,
+                comment:  parseComment,
+                tolerant: parseTolerant
+            };
+
+        result = esprima.parseScript(input, options);
+        return JSON.stringify(result, null, 2);
+    },
+
+
+    /**
+     * @constant
+     * @default
+     */
+    BEAUTIFY_INDENT: "\\t",
+    /**
+     * @constant
+     * @default
+     */
+    BEAUTIFY_QUOTES: ["Auto", "Single", "Double"],
+    /**
+     * @constant
+     * @default
+     */
+    BEAUTIFY_SEMICOLONS: true,
+    /**
+     * @constant
+     * @default
+     */
+    BEAUTIFY_COMMENT: true,
+
+    /**
+     * JavaScript Beautify operation.
+     *
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    runBeautify: function(input, args) {
+        let beautifyIndent = args[0] || JS.BEAUTIFY_INDENT,
+            quotes = args[1].toLowerCase(),
+            beautifySemicolons = args[2],
+            beautifyComment = args[3],
+            result = "",
+            AST;
+
+        try {
+            AST = esprima.parseScript(input, {
+                range: true,
+                tokens: true,
+                comment: true
+            });
+
+            const options = {
+                format: {
+                    indent: {
+                        style: beautifyIndent
+                    },
+                    quotes: quotes,
+                    semicolons: beautifySemicolons,
+                },
+                comment: beautifyComment
+            };
+
+            if (options.comment)
+                AST = escodegen.attachComments(AST, AST.comments, AST.tokens);
+
+            result = escodegen.generate(AST, options);
+        } catch (e) {
+            // Leave original error so the user can see the detail
+            throw "Unable to parse JavaScript.<br>" + e.message;
+        }
+        return result;
+    },
+
+
+    /**
+     * JavaScript Minify operation.
+     *
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    runMinify: function(input, args) {
+        let result = "",
+            AST = esprima.parseScript(input),
+            optimisedAST = esmangle.optimize(AST, null),
+            mangledAST = esmangle.mangle(optimisedAST);
+
+        result = escodegen.generate(mangledAST, {
+            format: {
+                renumber:    true,
+                hexadecimal: true,
+                escapeless:  true,
+                compact:     true,
+                semicolons:  false,
+                parentheses: false
+            }
+        });
+        return result;
+    },
+
+};
+
+export default JS;