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frontend/node_modules/strip-comments/lib/Node.js

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+'use strict';
+
+class Node {
+  constructor(node) {
+    this.type = node.type;
+    if (node.value) this.value = node.value;
+    if (node.match) this.match = node.match;
+    this.newline = node.newline || '';
+  }
+  get protected() {
+    return Boolean(this.match) && this.match[1] === '!';
+  }
+}
+
+class Block extends Node {
+  constructor(node) {
+    super(node);
+    this.nodes = node.nodes || [];
+  }
+  push(node) {
+    this.nodes.push(node);
+  }
+  get protected() {
+    return this.nodes.length > 0 && this.nodes[0].protected === true;
+  }
+}
+
+module.exports = { Node, Block };

frontend/node_modules/strip-comments/lib/compile.js

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+'use strict';
+
+const compile = (cst, options = {}) => {
+  const keepProtected = options.safe === true || options.keepProtected === true;
+  let firstSeen = false;
+
+  const walk = (node, parent) => {
+    let output = '';
+    let inner;
+    let lines;
+
+    for (const child of node.nodes) {
+      switch (child.type) {
+        case 'block':
+          if (options.first && firstSeen === true) {
+            output += walk(child, node);
+            break;
+          }
+
+          if (options.preserveNewlines === true) {
+            inner = walk(child, node);
+            lines = inner.split('\n');
+            output += '\n'.repeat(lines.length - 1);
+            break;
+          }
+
+          if (keepProtected === true && child.protected === true) {
+            output += walk(child, node);
+            break;
+          }
+
+          firstSeen = true;
+          break;
+        case 'line':
+          if (options.first && firstSeen === true) {
+            output += child.value;
+            break;
+          }
+
+          if (keepProtected === true && child.protected === true) {
+            output += child.value;
+          }
+
+          firstSeen = true;
+          break;
+        case 'open':
+        case 'close':
+        case 'text':
+        case 'newline':
+        default: {
+          output += child.value || '';
+          break;
+        }
+      }
+    }
+
+    return output;
+  };
+
+  return walk(cst);
+};
+
+module.exports = compile;

frontend/node_modules/strip-comments/lib/languages.js

@@ -0,0 +1,85 @@
+'use strict';
+
+exports.ada = { LINE_REGEX: /^--.*/ };
+exports.apl = { LINE_REGEX: /^⍝.*/ };
+
+exports.applescript = {
+  BLOCK_OPEN_REGEX: /^\(\*/,
+  BLOCK_CLOSE_REGEX: /^\*\)/
+};
+
+exports.csharp = {
+  LINE_REGEX: /^\/\/.*/
+};
+
+exports.haskell = {
+  BLOCK_OPEN_REGEX: /^\{-/,
+  BLOCK_CLOSE_REGEX: /^-\}/,
+  LINE_REGEX: /^--.*/
+};
+
+exports.html = {
+  BLOCK_OPEN_REGEX: /^\n*<!--(?!-?>)/,
+  BLOCK_CLOSE_REGEX: /^(?<!(?:<!-))-->/,
+  BLOCK_CLOSE_LOOSE_REGEX: /^(?<!(?:<!-))--\s*>/,
+  BLOCK_CLOSE_STRICT_NEWLINE_REGEX: /^(?<!(?:<!-))-->(\s*\n+|\n*)/,
+  BLOCK_CLOSE_STRICT_LOOSE_REGEX: /^(?<!(?:<!-))--\s*>(\s*\n+|\n*)/
+};
+
+exports.javascript = {
+  BLOCK_OPEN_REGEX: /^\/\*\*?(!?)/,
+  BLOCK_CLOSE_REGEX: /^\*\/(\n?)/,
+  LINE_REGEX: /^\/\/(!?).*/
+};
+
+exports.lua = {
+  BLOCK_OPEN_REGEX: /^--\[\[/,
+  BLOCK_CLOSE_REGEX: /^\]\]/,
+  LINE_REGEX: /^--.*/
+};
+
+exports.matlab = {
+  BLOCK_OPEN_REGEX: /^%{/,
+  BLOCK_CLOSE_REGEX: /^%}/,
+  LINE_REGEX: /^%.*/
+};
+
+exports.perl = {
+  LINE_REGEX: /^#.*/
+};
+
+exports.php = {
+  ...exports.javascript,
+  LINE_REGEX: /^(#|\/\/).*?(?=\?>|\n)/
+};
+
+exports.python = {
+  BLOCK_OPEN_REGEX: /^"""/,
+  BLOCK_CLOSE_REGEX: /^"""/,
+  LINE_REGEX: /^#.*/
+};
+
+exports.ruby = {
+  BLOCK_OPEN_REGEX: /^=begin/,
+  BLOCK_CLOSE_REGEX: /^=end/,
+  LINE_REGEX: /^#.*/
+};
+
+exports.shebang = exports.hashbang = {
+  LINE_REGEX: /^#!.*/
+};
+
+exports.c = exports.javascript;
+exports.csharp = exports.javascript;
+exports.css = exports.javascript;
+exports.java = exports.javascript;
+exports.js = exports.javascript;
+exports.less = exports.javascript;
+exports.pascal = exports.applescript;
+exports.ocaml = exports.applescript;
+exports.sass = exports.javascript;
+exports.sql = exports.ada;
+exports.swift = exports.javascript;
+exports.ts = exports.javascript;
+exports.typscript = exports.javascript;
+exports.xml = exports.html;

frontend/node_modules/strip-comments/lib/parse.js

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+'use strict';
+
+const { Node, Block } = require('./Node');
+const languages = require('./languages');
+
+const constants = {
+  ESCAPED_CHAR_REGEX: /^\\./,
+  QUOTED_STRING_REGEX: /^(['"`])((?:\\.|[^\1])+?)(\1)/,
+  NEWLINE_REGEX: /^\r*\n/
+};
+
+const parse = (input, options = {}) => {
+  if (typeof input !== 'string') {
+    throw new TypeError('Expected input to be a string');
+  }
+
+  const cst = new Block({ type: 'root', nodes: [] });
+  const stack = [cst];
+  const name = (options.language || 'javascript').toLowerCase();
+  const lang = languages[name];
+
+  if (typeof lang === 'undefined') {
+    throw new Error(`Language "${name}" is not supported by strip-comments`);
+  }
+
+  const { LINE_REGEX, BLOCK_OPEN_REGEX, BLOCK_CLOSE_REGEX } = lang;
+  let block = cst;
+  let remaining = input;
+  let token;
+  let prev;
+
+  const source = [BLOCK_OPEN_REGEX, BLOCK_CLOSE_REGEX].filter(Boolean);
+  let tripleQuotes = false;
+
+  if (source.every(regex => regex.source === '^"""')) {
+    tripleQuotes = true;
+  }
+
+  /**
+   * Helpers
+   */
+
+  const consume = (value = remaining[0] || '') => {
+    remaining = remaining.slice(value.length);
+    return value;
+  };
+
+  const scan = (regex, type = 'text') => {
+    const match = regex.exec(remaining);
+    if (match) {
+      consume(match[0]);
+      return { type, value: match[0], match };
+    }
+  };
+
+  const push = node => {
+    if (prev && prev.type === 'text' && node.type === 'text') {
+      prev.value += node.value;
+      return;
+    }
+    block.push(node);
+    if (node.nodes) {
+      stack.push(node);
+      block = node;
+    }
+    prev = node;
+  };
+
+  const pop = () => {
+    if (block.type === 'root') {
+      throw new SyntaxError('Unclosed block comment');
+    }
+    stack.pop();
+    block = stack[stack.length - 1];
+  };
+
+  /**
+   * Parse input string
+   */
+
+  while (remaining !== '') {
+    // escaped characters
+    if ((token = scan(constants.ESCAPED_CHAR_REGEX, 'text'))) {
+      push(new Node(token));
+      continue;
+    }
+
+    // quoted strings
+    if (block.type !== 'block' && (!prev || !/\w$/.test(prev.value)) && !(tripleQuotes && remaining.startsWith('"""'))) {
+      if ((token = scan(constants.QUOTED_STRING_REGEX, 'text'))) {
+        push(new Node(token));
+        continue;
+      }
+    }
+
+    // newlines
+    if ((token = scan(constants.NEWLINE_REGEX, 'newline'))) {
+      push(new Node(token));
+      continue;
+    }
+
+    // block comment open
+    if (BLOCK_OPEN_REGEX && options.block && !(tripleQuotes && block.type === 'block')) {
+      if ((token = scan(BLOCK_OPEN_REGEX, 'open'))) {
+        push(new Block({ type: 'block' }));
+        push(new Node(token));
+        continue;
+      }
+    }
+
+    // block comment close
+    if (BLOCK_CLOSE_REGEX && block.type === 'block' && options.block) {
+      if ((token = scan(BLOCK_CLOSE_REGEX, 'close'))) {
+        token.newline = token.match[1] || '';
+        push(new Node(token));
+        pop();
+        continue;
+      }
+    }
+
+    // line comment
+    if (LINE_REGEX && block.type !== 'block' && options.line) {
+      if ((token = scan(LINE_REGEX, 'line'))) {
+        push(new Node(token));
+        continue;
+      }
+    }
+
+    // Plain text (skip "C" since some languages use "C" to start comments)
+    if ((token = scan(/^[a-zABD-Z0-9\t ]+/, 'text'))) {
+      push(new Node(token));
+      continue;
+    }
+
+    push(new Node({ type: 'text', value: consume(remaining[0]) }));
+  }
+
+  return cst;
+};
+
+module.exports = parse;