154 lines
3.7 KiB
JavaScript
Executable File
154 lines
3.7 KiB
JavaScript
Executable File
/**
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* @fileoverview Enforce spacing between rest and spread operators and their expressions.
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* @author Kai Cataldo
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* @deprecated in ESLint v8.53.0
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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/** @type {import('../types').Rule.RuleModule} */
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module.exports = {
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meta: {
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deprecated: {
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message: "Formatting rules are being moved out of ESLint core.",
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url: "https://eslint.org/blog/2023/10/deprecating-formatting-rules/",
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deprecatedSince: "8.53.0",
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availableUntil: "10.0.0",
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replacedBy: [
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{
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message:
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"ESLint Stylistic now maintains deprecated stylistic core rules.",
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url: "https://eslint.style/guide/migration",
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plugin: {
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name: "@stylistic/eslint-plugin",
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url: "https://eslint.style",
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},
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rule: {
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name: "rest-spread-spacing",
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url: "https://eslint.style/rules/rest-spread-spacing",
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},
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},
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],
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},
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type: "layout",
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docs: {
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description:
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"Enforce spacing between rest and spread operators and their expressions",
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recommended: false,
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url: "https://eslint.org/docs/latest/rules/rest-spread-spacing",
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},
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fixable: "whitespace",
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schema: [
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{
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enum: ["always", "never"],
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},
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],
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messages: {
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unexpectedWhitespace:
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"Unexpected whitespace after {{type}} operator.",
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expectedWhitespace: "Expected whitespace after {{type}} operator.",
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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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alwaysSpace = context.options[0] === "always";
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//--------------------------------------------------------------------------
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// Helpers
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//--------------------------------------------------------------------------
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/**
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* Checks whitespace between rest/spread operators and their expressions
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* @param {ASTNode} node The node to check
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* @returns {void}
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*/
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function checkWhiteSpace(node) {
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const operator = sourceCode.getFirstToken(node),
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nextToken = sourceCode.getTokenAfter(operator),
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hasWhitespace = sourceCode.isSpaceBetweenTokens(
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operator,
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nextToken,
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);
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let type;
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switch (node.type) {
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case "SpreadElement":
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type = "spread";
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if (node.parent.type === "ObjectExpression") {
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type += " property";
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}
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break;
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case "RestElement":
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type = "rest";
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if (node.parent.type === "ObjectPattern") {
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type += " property";
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}
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break;
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case "ExperimentalSpreadProperty":
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type = "spread property";
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break;
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case "ExperimentalRestProperty":
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type = "rest property";
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break;
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default:
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return;
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}
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if (alwaysSpace && !hasWhitespace) {
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context.report({
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node,
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loc: operator.loc,
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messageId: "expectedWhitespace",
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data: {
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type,
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},
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fix(fixer) {
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return fixer.replaceTextRange(
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[operator.range[1], nextToken.range[0]],
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" ",
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);
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},
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});
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} else if (!alwaysSpace && hasWhitespace) {
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context.report({
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node,
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loc: {
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start: operator.loc.end,
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end: nextToken.loc.start,
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},
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messageId: "unexpectedWhitespace",
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data: {
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type,
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},
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fix(fixer) {
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return fixer.removeRange([
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operator.range[1],
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nextToken.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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// Public
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//--------------------------------------------------------------------------
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return {
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SpreadElement: checkWhiteSpace,
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RestElement: checkWhiteSpace,
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ExperimentalSpreadProperty: checkWhiteSpace,
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ExperimentalRestProperty: checkWhiteSpace,
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};
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},
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};
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