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| /**
| * @fileoverview Rule to check for tabs inside a file
| * @author Gyandeep Singh
| */
|
| "use strict";
|
| //------------------------------------------------------------------------------
| // Helpers
| //------------------------------------------------------------------------------
|
| const tabRegex = /\t+/gu;
| const anyNonWhitespaceRegex = /\S/u;
|
| //------------------------------------------------------------------------------
| // Public Interface
| //------------------------------------------------------------------------------
|
| module.exports = {
| meta: {
| type: "layout",
|
| docs: {
| description: "disallow all tabs",
| category: "Stylistic Issues",
| recommended: false,
| url: "https://eslint.org/docs/rules/no-tabs"
| },
| schema: [{
| type: "object",
| properties: {
| allowIndentationTabs: {
| type: "boolean",
| default: false
| }
| },
| additionalProperties: false
| }]
| },
|
| create(context) {
| const sourceCode = context.getSourceCode();
| const allowIndentationTabs = context.options && context.options[0] && context.options[0].allowIndentationTabs;
|
| return {
| Program(node) {
| sourceCode.getLines().forEach((line, index) => {
| let match;
|
| while ((match = tabRegex.exec(line)) !== null) {
| if (allowIndentationTabs && !anyNonWhitespaceRegex.test(line.slice(0, match.index))) {
| continue;
| }
|
| context.report({
| node,
| loc: {
| start: {
| line: index + 1,
| column: match.index
| },
| end: {
| line: index + 1,
| column: match.index + match[0].length
| }
| },
| message: "Unexpected tab character."
| });
| }
| });
| }
| };
| }
| };
|
|
