.config/coc/extensions/node_modules/coc-prettier/node_modules/strip-json-comments/index.js

   1 'use strict';
   2 const singleComment = Symbol('singleComment');
   3 const multiComment = Symbol('multiComment');
   4 const stripWithoutWhitespace = () => '';
   5 const stripWithWhitespace = (string, start, end) => string.slice(start, end).replace(/\S/g, ' ');
   6
   7 const isEscaped = (jsonString, quotePosition) => {
   8         let index = quotePosition - 1;
   9         let backslashCount = 0;
  10
  11         while (jsonString[index] === '\\') {
  12                 index -= 1;
  13                 backslashCount += 1;
  14         }
  15
  16         return Boolean(backslashCount % 2);
  17 };
  18
  19 module.exports = (jsonString, options = {}) => {
  20         if (typeof jsonString !== 'string') {
  21                 throw new TypeError(`Expected argument \`jsonString\` to be a \`string\`, got \`${typeof jsonString}\``);
  22         }
  23
  24         const strip = options.whitespace === false ? stripWithoutWhitespace : stripWithWhitespace;
  25
  26         let insideString = false;
  27         let insideComment = false;
  28         let offset = 0;
  29         let result = '';
  30
  31         for (let i = 0; i < jsonString.length; i++) {
  32                 const currentCharacter = jsonString[i];
  33                 const nextCharacter = jsonString[i + 1];
  34
  35                 if (!insideComment && currentCharacter === '"') {
  36                         const escaped = isEscaped(jsonString, i);
  37                         if (!escaped) {
  38                                 insideString = !insideString;
  39                         }
  40                 }
  41
  42                 if (insideString) {
  43                         continue;
  44                 }
  45
  46                 if (!insideComment && currentCharacter + nextCharacter === '//') {
  47                         result += jsonString.slice(offset, i);
  48                         offset = i;
  49                         insideComment = singleComment;
  50                         i++;
  51                 } else if (insideComment === singleComment && currentCharacter + nextCharacter === '\r\n') {
  52                         i++;
  53                         insideComment = false;
  54                         result += strip(jsonString, offset, i);
  55                         offset = i;
  56                         continue;
  57                 } else if (insideComment === singleComment && currentCharacter === '\n') {
  58                         insideComment = false;
  59                         result += strip(jsonString, offset, i);
  60                         offset = i;
  61                 } else if (!insideComment && currentCharacter + nextCharacter === '/*') {
  62                         result += jsonString.slice(offset, i);
  63                         offset = i;
  64                         insideComment = multiComment;
  65                         i++;
  66                         continue;
  67                 } else if (insideComment === multiComment && currentCharacter + nextCharacter === '*/') {
  68                         i++;
  69                         insideComment = false;
  70                         result += strip(jsonString, offset, i + 1);
  71                         offset = i + 1;
  72                         continue;
  73                 }
  74         }
  75
  76         return result + (insideComment ? strip(jsonString.slice(offset)) : jsonString.slice(offset));
  77 };