.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-tabs.js

   1 /**
   2  * @fileoverview Rule to check for tabs inside a file
   3  * @author Gyandeep Singh
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Helpers
  10 //------------------------------------------------------------------------------
  11
  12 const tabRegex = /\t+/gu;
  13 const anyNonWhitespaceRegex = /\S/u;
  14
  15 //------------------------------------------------------------------------------
  16 // Public Interface
  17 //------------------------------------------------------------------------------
  18
  19 module.exports = {
  20     meta: {
  21         type: "layout",
  22
  23         docs: {
  24             description: "disallow all tabs",
  25             category: "Stylistic Issues",
  26             recommended: false,
  27             url: "https://eslint.org/docs/rules/no-tabs"
  28         },
  29         schema: [{
  30             type: "object",
  31             properties: {
  32                 allowIndentationTabs: {
  33                     type: "boolean",
  34                     default: false
  35                 }
  36             },
  37             additionalProperties: false
  38         }]
  39     },
  40
  41     create(context) {
  42         const sourceCode = context.getSourceCode();
  43         const allowIndentationTabs = context.options && context.options[0] && context.options[0].allowIndentationTabs;
  44
  45         return {
  46             Program(node) {
  47                 sourceCode.getLines().forEach((line, index) => {
  48                     let match;
  49
  50                     while ((match = tabRegex.exec(line)) !== null) {
  51                         if (allowIndentationTabs && !anyNonWhitespaceRegex.test(line.slice(0, match.index))) {
  52                             continue;
  53                         }
  54
  55                         context.report({
  56                             node,
  57                             loc: {
  58                                 start: {
  59                                     line: index + 1,
  60                                     column: match.index
  61                                 },
  62                                 end: {
  63                                     line: index + 1,
  64                                     column: match.index + match[0].length
  65                                 }
  66                             },
  67                             message: "Unexpected tab character."
  68                         });
  69                     }
  70                 });
  71             }
  72         };
  73     }
  74 };