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74 lines
2.0 KiB
JavaScript
74 lines
2.0 KiB
JavaScript
/**
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* @fileoverview Rule to enforce description with the `Symbol` object
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* @author Jarek Rencz
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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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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type: "suggestion",
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docs: {
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description: "Require symbol descriptions",
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recommended: false,
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url: "https://eslint.org/docs/latest/rules/symbol-description"
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},
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fixable: null,
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schema: [],
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messages: {
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expected: "Expected Symbol to have a description."
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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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/**
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* Reports if node does not conform the rule in case rule is set to
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* report missing description
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* @param {ASTNode} node A CallExpression node to check.
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* @returns {void}
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*/
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function checkArgument(node) {
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if (node.arguments.length === 0) {
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context.report({
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node,
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messageId: "expected"
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});
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}
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}
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return {
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"Program:exit"(node) {
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const scope = sourceCode.getScope(node);
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const variable = astUtils.getVariableByName(scope, "Symbol");
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if (variable && variable.defs.length === 0) {
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variable.references.forEach(reference => {
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const idNode = reference.identifier;
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if (astUtils.isCallee(idNode)) {
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checkArgument(idNode.parent);
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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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