Updated the Survey.

node_modules/braces/lib/compile.js

@@ -0,0 +1,57 @@
+'use strict';
+
+const fill = require('fill-range');
+const utils = require('./utils');
+
+const compile = (ast, options = {}) => {
+  let walk = (node, parent = {}) => {
+    let invalidBlock = utils.isInvalidBrace(parent);
+    let invalidNode = node.invalid === true && options.escapeInvalid === true;
+    let invalid = invalidBlock === true || invalidNode === true;
+    let prefix = options.escapeInvalid === true ? '\\' : '';
+    let output = '';
+
+    if (node.isOpen === true) {
+      return prefix + node.value;
+    }
+    if (node.isClose === true) {
+      return prefix + node.value;
+    }
+
+    if (node.type === 'open') {
+      return invalid ? (prefix + node.value) : '(';
+    }
+
+    if (node.type === 'close') {
+      return invalid ? (prefix + node.value) : ')';
+    }
+
+    if (node.type === 'comma') {
+      return node.prev.type === 'comma' ? '' : (invalid ? node.value : '|');
+    }
+
+    if (node.value) {
+      return node.value;
+    }
+
+    if (node.nodes && node.ranges > 0) {
+      let args = utils.reduce(node.nodes);
+      let range = fill(...args, { ...options, wrap: false, toRegex: true });
+
+      if (range.length !== 0) {
+        return args.length > 1 && range.length > 1 ? `(${range})` : range;
+      }
+    }
+
+    if (node.nodes) {
+      for (let child of node.nodes) {
+        output += walk(child, node);
+      }
+    }
+    return output;
+  };
+
+  return walk(ast);
+};
+
+module.exports = compile;

node_modules/braces/lib/constants.js

@@ -0,0 +1,57 @@
+'use strict';
+
+module.exports = {
+  MAX_LENGTH: 1024 * 64,
+
+  // Digits
+  CHAR_0: '0', /* 0 */
+  CHAR_9: '9', /* 9 */
+
+  // Alphabet chars.
+  CHAR_UPPERCASE_A: 'A', /* A */
+  CHAR_LOWERCASE_A: 'a', /* a */
+  CHAR_UPPERCASE_Z: 'Z', /* Z */
+  CHAR_LOWERCASE_Z: 'z', /* z */
+
+  CHAR_LEFT_PARENTHESES: '(', /* ( */
+  CHAR_RIGHT_PARENTHESES: ')', /* ) */
+
+  CHAR_ASTERISK: '*', /* * */
+
+  // Non-alphabetic chars.
+  CHAR_AMPERSAND: '&', /* & */
+  CHAR_AT: '@', /* @ */
+  CHAR_BACKSLASH: '\\', /* \ */
+  CHAR_BACKTICK: '`', /* ` */
+  CHAR_CARRIAGE_RETURN: '\r', /* \r */
+  CHAR_CIRCUMFLEX_ACCENT: '^', /* ^ */
+  CHAR_COLON: ':', /* : */
+  CHAR_COMMA: ',', /* , */
+  CHAR_DOLLAR: '$', /* . */
+  CHAR_DOT: '.', /* . */
+  CHAR_DOUBLE_QUOTE: '"', /* " */
+  CHAR_EQUAL: '=', /* = */
+  CHAR_EXCLAMATION_MARK: '!', /* ! */
+  CHAR_FORM_FEED: '\f', /* \f */
+  CHAR_FORWARD_SLASH: '/', /* / */
+  CHAR_HASH: '#', /* # */
+  CHAR_HYPHEN_MINUS: '-', /* - */
+  CHAR_LEFT_ANGLE_BRACKET: '<', /* < */
+  CHAR_LEFT_CURLY_BRACE: '{', /* { */
+  CHAR_LEFT_SQUARE_BRACKET: '[', /* [ */
+  CHAR_LINE_FEED: '\n', /* \n */
+  CHAR_NO_BREAK_SPACE: '\u00A0', /* \u00A0 */
+  CHAR_PERCENT: '%', /* % */
+  CHAR_PLUS: '+', /* + */
+  CHAR_QUESTION_MARK: '?', /* ? */
+  CHAR_RIGHT_ANGLE_BRACKET: '>', /* > */
+  CHAR_RIGHT_CURLY_BRACE: '}', /* } */
+  CHAR_RIGHT_SQUARE_BRACKET: ']', /* ] */
+  CHAR_SEMICOLON: ';', /* ; */
+  CHAR_SINGLE_QUOTE: '\'', /* ' */
+  CHAR_SPACE: ' ', /*   */
+  CHAR_TAB: '\t', /* \t */
+  CHAR_UNDERSCORE: '_', /* _ */
+  CHAR_VERTICAL_LINE: '|', /* | */
+  CHAR_ZERO_WIDTH_NOBREAK_SPACE: '\uFEFF' /* \uFEFF */
+};

node_modules/braces/lib/expand.js

@@ -0,0 +1,113 @@
+'use strict';
+
+const fill = require('fill-range');
+const stringify = require('./stringify');
+const utils = require('./utils');
+
+const append = (queue = '', stash = '', enclose = false) => {
+  let result = [];
+
+  queue = [].concat(queue);
+  stash = [].concat(stash);
+
+  if (!stash.length) return queue;
+  if (!queue.length) {
+    return enclose ? utils.flatten(stash).map(ele => `{${ele}}`) : stash;
+  }
+
+  for (let item of queue) {
+    if (Array.isArray(item)) {
+      for (let value of item) {
+        result.push(append(value, stash, enclose));
+      }
+    } else {
+      for (let ele of stash) {
+        if (enclose === true && typeof ele === 'string') ele = `{${ele}}`;
+        result.push(Array.isArray(ele) ? append(item, ele, enclose) : (item + ele));
+      }
+    }
+  }
+  return utils.flatten(result);
+};
+
+const expand = (ast, options = {}) => {
+  let rangeLimit = options.rangeLimit === void 0 ? 1000 : options.rangeLimit;
+
+  let walk = (node, parent = {}) => {
+    node.queue = [];
+
+    let p = parent;
+    let q = parent.queue;
+
+    while (p.type !== 'brace' && p.type !== 'root' && p.parent) {
+      p = p.parent;
+      q = p.queue;
+    }
+
+    if (node.invalid || node.dollar) {
+      q.push(append(q.pop(), stringify(node, options)));
+      return;
+    }
+
+    if (node.type === 'brace' && node.invalid !== true && node.nodes.length === 2) {
+      q.push(append(q.pop(), ['{}']));
+      return;
+    }
+
+    if (node.nodes && node.ranges > 0) {
+      let args = utils.reduce(node.nodes);
+
+      if (utils.exceedsLimit(...args, options.step, rangeLimit)) {
+        throw new RangeError('expanded array length exceeds range limit. Use options.rangeLimit to increase or disable the limit.');
+      }
+
+      let range = fill(...args, options);
+      if (range.length === 0) {
+        range = stringify(node, options);
+      }
+
+      q.push(append(q.pop(), range));
+      node.nodes = [];
+      return;
+    }
+
+    let enclose = utils.encloseBrace(node);
+    let queue = node.queue;
+    let block = node;
+
+    while (block.type !== 'brace' && block.type !== 'root' && block.parent) {
+      block = block.parent;
+      queue = block.queue;
+    }
+
+    for (let i = 0; i < node.nodes.length; i++) {
+      let child = node.nodes[i];
+
+      if (child.type === 'comma' && node.type === 'brace') {
+        if (i === 1) queue.push('');
+        queue.push('');
+        continue;
+      }
+
+      if (child.type === 'close') {
+        q.push(append(q.pop(), queue, enclose));
+        continue;
+      }
+
+      if (child.value && child.type !== 'open') {
+        queue.push(append(queue.pop(), child.value));
+        continue;
+      }
+
+      if (child.nodes) {
+        walk(child, node);
+      }
+    }
+
+    return queue;
+  };
+
+  return utils.flatten(walk(ast));
+};
+
+module.exports = expand;

node_modules/braces/lib/parse.js

@@ -0,0 +1,333 @@
+'use strict';
+
+const stringify = require('./stringify');
+
+/**
+ * Constants
+ */
+
+const {
+  MAX_LENGTH,
+  CHAR_BACKSLASH, /* \ */
+  CHAR_BACKTICK, /* ` */
+  CHAR_COMMA, /* , */
+  CHAR_DOT, /* . */
+  CHAR_LEFT_PARENTHESES, /* ( */
+  CHAR_RIGHT_PARENTHESES, /* ) */
+  CHAR_LEFT_CURLY_BRACE, /* { */
+  CHAR_RIGHT_CURLY_BRACE, /* } */
+  CHAR_LEFT_SQUARE_BRACKET, /* [ */
+  CHAR_RIGHT_SQUARE_BRACKET, /* ] */
+  CHAR_DOUBLE_QUOTE, /* " */
+  CHAR_SINGLE_QUOTE, /* ' */
+  CHAR_NO_BREAK_SPACE,
+  CHAR_ZERO_WIDTH_NOBREAK_SPACE
+} = require('./constants');
+
+/**
+ * parse
+ */
+
+const parse = (input, options = {}) => {
+  if (typeof input !== 'string') {
+    throw new TypeError('Expected a string');
+  }
+
+  let opts = options || {};
+  let max = typeof opts.maxLength === 'number' ? Math.min(MAX_LENGTH, opts.maxLength) : MAX_LENGTH;
+  if (input.length > max) {
+    throw new SyntaxError(`Input length (${input.length}), exceeds max characters (${max})`);
+  }
+
+  let ast = { type: 'root', input, nodes: [] };
+  let stack = [ast];
+  let block = ast;
+  let prev = ast;
+  let brackets = 0;
+  let length = input.length;
+  let index = 0;
+  let depth = 0;
+  let value;
+  let memo = {};
+
+  /**
+   * Helpers
+   */
+
+  const advance = () => input[index++];
+  const push = node => {
+    if (node.type === 'text' && prev.type === 'dot') {
+      prev.type = 'text';
+    }
+
+    if (prev && prev.type === 'text' && node.type === 'text') {
+      prev.value += node.value;
+      return;
+    }
+
+    block.nodes.push(node);
+    node.parent = block;
+    node.prev = prev;
+    prev = node;
+    return node;
+  };
+
+  push({ type: 'bos' });
+
+  while (index < length) {
+    block = stack[stack.length - 1];
+    value = advance();
+
+    /**
+     * Invalid chars
+     */
+
+    if (value === CHAR_ZERO_WIDTH_NOBREAK_SPACE || value === CHAR_NO_BREAK_SPACE) {
+      continue;
+    }
+
+    /**
+     * Escaped chars
+     */
+
+    if (value === CHAR_BACKSLASH) {
+      push({ type: 'text', value: (options.keepEscaping ? value : '') + advance() });
+      continue;
+    }
+
+    /**
+     * Right square bracket (literal): ']'
+     */
+
+    if (value === CHAR_RIGHT_SQUARE_BRACKET) {
+      push({ type: 'text', value: '\\' + value });
+      continue;
+    }
+
+    /**
+     * Left square bracket: '['
+     */
+
+    if (value === CHAR_LEFT_SQUARE_BRACKET) {
+      brackets++;
+
+      let closed = true;
+      let next;
+
+      while (index < length && (next = advance())) {
+        value += next;
+
+        if (next === CHAR_LEFT_SQUARE_BRACKET) {
+          brackets++;
+          continue;
+        }
+
+        if (next === CHAR_BACKSLASH) {
+          value += advance();
+          continue;
+        }
+
+        if (next === CHAR_RIGHT_SQUARE_BRACKET) {
+          brackets--;
+
+          if (brackets === 0) {
+            break;
+          }
+        }
+      }
+
+      push({ type: 'text', value });
+      continue;
+    }
+
+    /**
+     * Parentheses
+     */
+
+    if (value === CHAR_LEFT_PARENTHESES) {
+      block = push({ type: 'paren', nodes: [] });
+      stack.push(block);
+      push({ type: 'text', value });
+      continue;
+    }
+
+    if (value === CHAR_RIGHT_PARENTHESES) {
+      if (block.type !== 'paren') {
+        push({ type: 'text', value });
+        continue;
+      }
+      block = stack.pop();
+      push({ type: 'text', value });
+      block = stack[stack.length - 1];
+      continue;
+    }
+
+    /**
+     * Quotes: '|"|`
+     */
+
+    if (value === CHAR_DOUBLE_QUOTE || value === CHAR_SINGLE_QUOTE || value === CHAR_BACKTICK) {
+      let open = value;
+      let next;
+
+      if (options.keepQuotes !== true) {
+        value = '';
+      }
+
+      while (index < length && (next = advance())) {
+        if (next === CHAR_BACKSLASH) {
+          value += next + advance();
+          continue;
+        }
+
+        if (next === open) {
+          if (options.keepQuotes === true) value += next;
+          break;
+        }
+
+        value += next;
+      }
+
+      push({ type: 'text', value });
+      continue;
+    }
+
+    /**
+     * Left curly brace: '{'
+     */
+
+    if (value === CHAR_LEFT_CURLY_BRACE) {
+      depth++;
+
+      let dollar = prev.value && prev.value.slice(-1) === '$' || block.dollar === true;
+      let brace = {
+        type: 'brace',
+        open: true,
+        close: false,
+        dollar,
+        depth,
+        commas: 0,
+        ranges: 0,
+        nodes: []
+      };
+
+      block = push(brace);
+      stack.push(block);
+      push({ type: 'open', value });
+      continue;
+    }
+
+    /**
+     * Right curly brace: '}'
+     */
+
+    if (value === CHAR_RIGHT_CURLY_BRACE) {
+      if (block.type !== 'brace') {
+        push({ type: 'text', value });
+        continue;
+      }
+
+      let type = 'close';
+      block = stack.pop();
+      block.close = true;
+
+      push({ type, value });
+      depth--;
+
+      block = stack[stack.length - 1];
+      continue;
+    }
+
+    /**
+     * Comma: ','
+     */
+
+    if (value === CHAR_COMMA && depth > 0) {
+      if (block.ranges > 0) {
+        block.ranges = 0;
+        let open = block.nodes.shift();
+        block.nodes = [open, { type: 'text', value: stringify(block) }];
+      }
+
+      push({ type: 'comma', value });
+      block.commas++;
+      continue;
+    }
+
+    /**
+     * Dot: '.'
+     */
+
+    if (value === CHAR_DOT && depth > 0 && block.commas === 0) {
+      let siblings = block.nodes;
+
+      if (depth === 0 || siblings.length === 0) {
+        push({ type: 'text', value });
+        continue;
+      }
+
+      if (prev.type === 'dot') {
+        block.range = [];
+        prev.value += value;
+        prev.type = 'range';
+
+        if (block.nodes.length !== 3 && block.nodes.length !== 5) {
+          block.invalid = true;
+          block.ranges = 0;
+          prev.type = 'text';
+          continue;
+        }
+
+        block.ranges++;
+        block.args = [];
+        continue;
+      }
+
+      if (prev.type === 'range') {
+        siblings.pop();
+
+        let before = siblings[siblings.length - 1];
+        before.value += prev.value + value;
+        prev = before;
+        block.ranges--;
+        continue;
+      }
+
+      push({ type: 'dot', value });
+      continue;
+    }
+
+    /**
+     * Text
+     */
+
+    push({ type: 'text', value });
+  }
+
+  // Mark imbalanced braces and brackets as invalid
+  do {
+    block = stack.pop();
+
+    if (block.type !== 'root') {
+      block.nodes.forEach(node => {
+        if (!node.nodes) {
+          if (node.type === 'open') node.isOpen = true;
+          if (node.type === 'close') node.isClose = true;
+          if (!node.nodes) node.type = 'text';
+          node.invalid = true;
+        }
+      });
+
+      // get the location of the block on parent.nodes (block's siblings)
+      let parent = stack[stack.length - 1];
+      let index = parent.nodes.indexOf(block);
+      // replace the (invalid) block with it's nodes
+      parent.nodes.splice(index, 1, ...block.nodes);
+    }
+  } while (stack.length > 0);
+
+  push({ type: 'eos' });
+  return ast;
+};
+
+module.exports = parse;

node_modules/braces/lib/stringify.js

@@ -0,0 +1,32 @@
+'use strict';
+
+const utils = require('./utils');
+
+module.exports = (ast, options = {}) => {
+  let stringify = (node, parent = {}) => {
+    let invalidBlock = options.escapeInvalid && utils.isInvalidBrace(parent);
+    let invalidNode = node.invalid === true && options.escapeInvalid === true;
+    let output = '';
+
+    if (node.value) {
+      if ((invalidBlock || invalidNode) && utils.isOpenOrClose(node)) {
+        return '\\' + node.value;
+      }
+      return node.value;
+    }
+
+    if (node.value) {
+      return node.value;
+    }
+
+    if (node.nodes) {
+      for (let child of node.nodes) {
+        output += stringify(child);
+      }
+    }
+    return output;
+  };
+
+  return stringify(ast);
+};
+

node_modules/braces/lib/utils.js

@@ -0,0 +1,112 @@
+'use strict';
+
+exports.isInteger = num => {
+  if (typeof num === 'number') {
+    return Number.isInteger(num);
+  }
+  if (typeof num === 'string' && num.trim() !== '') {
+    return Number.isInteger(Number(num));
+  }
+  return false;
+};
+
+/**
+ * Find a node of the given type
+ */
+
+exports.find = (node, type) => node.nodes.find(node => node.type === type);
+
+/**
+ * Find a node of the given type
+ */
+
+exports.exceedsLimit = (min, max, step = 1, limit) => {
+  if (limit === false) return false;
+  if (!exports.isInteger(min) || !exports.isInteger(max)) return false;
+  return ((Number(max) - Number(min)) / Number(step)) >= limit;
+};
+
+/**
+ * Escape the given node with '\\' before node.value
+ */
+
+exports.escapeNode = (block, n = 0, type) => {
+  let node = block.nodes[n];
+  if (!node) return;
+
+  if ((type && node.type === type) || node.type === 'open' || node.type === 'close') {
+    if (node.escaped !== true) {
+      node.value = '\\' + node.value;
+      node.escaped = true;
+    }
+  }
+};
+
+/**
+ * Returns true if the given brace node should be enclosed in literal braces
+ */
+
+exports.encloseBrace = node => {
+  if (node.type !== 'brace') return false;
+  if ((node.commas >> 0 + node.ranges >> 0) === 0) {
+    node.invalid = true;
+    return true;
+  }
+  return false;
+};
+
+/**
+ * Returns true if a brace node is invalid.
+ */
+
+exports.isInvalidBrace = block => {
+  if (block.type !== 'brace') return false;
+  if (block.invalid === true || block.dollar) return true;
+  if ((block.commas >> 0 + block.ranges >> 0) === 0) {
+    block.invalid = true;
+    return true;
+  }
+  if (block.open !== true || block.close !== true) {
+    block.invalid = true;
+    return true;
+  }
+  return false;
+};
+
+/**
+ * Returns true if a node is an open or close node
+ */
+
+exports.isOpenOrClose = node => {
+  if (node.type === 'open' || node.type === 'close') {
+    return true;
+  }
+  return node.open === true || node.close === true;
+};
+
+/**
+ * Reduce an array of text nodes.
+ */
+
+exports.reduce = nodes => nodes.reduce((acc, node) => {
+  if (node.type === 'text') acc.push(node.value);
+  if (node.type === 'range') node.type = 'text';
+  return acc;
+}, []);
+
+/**
+ * Flatten an array
+ */
+
+exports.flatten = (...args) => {
+  const result = [];
+  const flat = arr => {
+    for (let i = 0; i < arr.length; i++) {
+      let ele = arr[i];
+      Array.isArray(ele) ? flat(ele, result) : ele !== void 0 && result.push(ele);
+    }
+    return result;
+  };
+  flat(args);
+  return result;
+};