68 lines
2.5 KiB
Plaintext
68 lines
2.5 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("@typescript-eslint/utils");
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const util_1 = require("../util");
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const getESLintCoreRule_1 = require("../util/getESLintCoreRule");
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const baseRule = (0, getESLintCoreRule_1.getESLintCoreRule)('no-invalid-this');
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exports.default = (0, util_1.createRule)({
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name: 'no-invalid-this',
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Disallow `this` keywords outside of classes or class-like objects',
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extendsBaseRule: true,
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},
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messages: baseRule.meta.messages,
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hasSuggestions: baseRule.meta.hasSuggestions,
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schema: baseRule.meta.schema,
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},
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defaultOptions: [{ capIsConstructor: true }],
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create(context) {
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const rules = baseRule.create(context);
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/**
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* Since function definitions can be nested we use a stack storing if "this" is valid in the current context.
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*
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* Example:
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*
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* function a(this: number) { // valid "this"
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* function b() {
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* console.log(this); // invalid "this"
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* }
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* }
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*
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* When parsing the function declaration of "a" the stack will be: [true]
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* When parsing the function declaration of "b" the stack will be: [true, false]
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*/
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const thisIsValidStack = [];
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return {
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...rules,
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PropertyDefinition() {
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thisIsValidStack.push(true);
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},
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'PropertyDefinition:exit'() {
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thisIsValidStack.pop();
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},
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FunctionDeclaration(node) {
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thisIsValidStack.push(node.params.some(param => param.type === utils_1.AST_NODE_TYPES.Identifier && param.name === 'this'));
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},
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'FunctionDeclaration:exit'() {
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thisIsValidStack.pop();
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},
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FunctionExpression(node) {
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thisIsValidStack.push(node.params.some(param => param.type === utils_1.AST_NODE_TYPES.Identifier && param.name === 'this'));
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},
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'FunctionExpression:exit'() {
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thisIsValidStack.pop();
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},
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ThisExpression(node) {
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const thisIsValidHere = thisIsValidStack[thisIsValidStack.length - 1];
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if (thisIsValidHere) {
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return;
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}
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// baseRule's work
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rules.ThisExpression(node);
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},
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};
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},
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});
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//# sourceMappingURL=no-invalid-this.js.map |