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141 lines
5.0 KiB
141 lines
5.0 KiB
/**
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* @fileoverview Disallow use of multiple spaces.
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* @author Nicholas C. Zakas
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* @deprecated in ESLint v8.53.0
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*/
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"use strict";
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const astUtils = require("./utils/ast-utils");
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//------------------------------------------------------------------------------
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// Rule Definition
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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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deprecated: true,
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replacedBy: [],
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type: "layout",
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docs: {
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description: "Disallow multiple spaces",
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recommended: false,
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url: "https://eslint.org/docs/latest/rules/no-multi-spaces"
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},
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fixable: "whitespace",
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schema: [
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{
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type: "object",
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properties: {
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exceptions: {
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type: "object",
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patternProperties: {
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"^([A-Z][a-z]*)+$": {
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type: "boolean"
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}
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},
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additionalProperties: false
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},
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ignoreEOLComments: {
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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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],
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messages: {
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multipleSpaces: "Multiple spaces found before '{{displayValue}}'."
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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 options = context.options[0] || {};
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const ignoreEOLComments = options.ignoreEOLComments;
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const exceptions = Object.assign({ Property: true }, options.exceptions);
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const hasExceptions = Object.keys(exceptions).some(key => exceptions[key]);
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/**
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* Formats value of given comment token for error message by truncating its length.
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* @param {Token} token comment token
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* @returns {string} formatted value
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* @private
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*/
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function formatReportedCommentValue(token) {
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const valueLines = token.value.split("\n");
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const value = valueLines[0];
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const formattedValue = `${value.slice(0, 12)}...`;
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return valueLines.length === 1 && value.length <= 12 ? value : formattedValue;
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}
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//--------------------------------------------------------------------------
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// Public
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//--------------------------------------------------------------------------
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return {
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Program() {
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sourceCode.tokensAndComments.forEach((leftToken, leftIndex, tokensAndComments) => {
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if (leftIndex === tokensAndComments.length - 1) {
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return;
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}
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const rightToken = tokensAndComments[leftIndex + 1];
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// Ignore tokens that don't have 2 spaces between them or are on different lines
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if (
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!sourceCode.text.slice(leftToken.range[1], rightToken.range[0]).includes(" ") ||
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leftToken.loc.end.line < rightToken.loc.start.line
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) {
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return;
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}
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// Ignore comments that are the last token on their line if `ignoreEOLComments` is active.
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if (
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ignoreEOLComments &&
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astUtils.isCommentToken(rightToken) &&
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(
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leftIndex === tokensAndComments.length - 2 ||
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rightToken.loc.end.line < tokensAndComments[leftIndex + 2].loc.start.line
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)
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) {
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return;
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}
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// Ignore tokens that are in a node in the "exceptions" object
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if (hasExceptions) {
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const parentNode = sourceCode.getNodeByRangeIndex(rightToken.range[0] - 1);
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if (parentNode && exceptions[parentNode.type]) {
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return;
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}
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}
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let displayValue;
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if (rightToken.type === "Block") {
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displayValue = `/*${formatReportedCommentValue(rightToken)}*/`;
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} else if (rightToken.type === "Line") {
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displayValue = `//${formatReportedCommentValue(rightToken)}`;
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} else {
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displayValue = rightToken.value;
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}
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context.report({
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node: rightToken,
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loc: { start: leftToken.loc.end, end: rightToken.loc.start },
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messageId: "multipleSpaces",
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data: { displayValue },
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fix: fixer => fixer.replaceTextRange([leftToken.range[1], rightToken.range[0]], " ")
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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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