79 lines
2.4 KiB
JavaScript
79 lines
2.4 KiB
JavaScript
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/**
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* @fileoverview Rule to check for tabs inside a file
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* @author Gyandeep Singh
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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const tabRegex = /\t+/gu;
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const anyNonWhitespaceRegex = /\S/u;
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//------------------------------------------------------------------------------
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// Public Interface
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//------------------------------------------------------------------------------
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/** @type {import('../shared/types').Rule} */
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module.exports = {
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meta: {
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type: "layout",
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docs: {
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description: "Disallow all tabs",
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recommended: false,
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url: "https://eslint.org/docs/latest/rules/no-tabs"
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},
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schema: [{
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type: "object",
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properties: {
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allowIndentationTabs: {
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type: "boolean",
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default: false
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}
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},
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additionalProperties: false
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}],
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messages: {
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unexpectedTab: "Unexpected tab character."
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}
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},
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create(context) {
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const sourceCode = context.sourceCode;
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const allowIndentationTabs = context.options && context.options[0] && context.options[0].allowIndentationTabs;
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return {
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Program(node) {
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sourceCode.getLines().forEach((line, index) => {
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let match;
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while ((match = tabRegex.exec(line)) !== null) {
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if (allowIndentationTabs && !anyNonWhitespaceRegex.test(line.slice(0, match.index))) {
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continue;
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}
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context.report({
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node,
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loc: {
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start: {
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line: index + 1,
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column: match.index
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},
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end: {
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line: index + 1,
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column: match.index + match[0].length
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}
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},
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messageId: "unexpectedTab"
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});
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}
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});
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}
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};
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}
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};
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