no-this-alias.js
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"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const experimental_utils_1 = require("@typescript-eslint/experimental-utils");
const util = __importStar(require("../util"));
exports.default = util.createRule({
name: 'no-this-alias',
meta: {
type: 'suggestion',
docs: {
description: 'Disallow aliasing `this`',
category: 'Best Practices',
recommended: 'error',
},
schema: [
{
type: 'object',
additionalProperties: false,
properties: {
allowDestructuring: {
type: 'boolean',
},
allowedNames: {
type: 'array',
items: {
type: 'string',
},
},
},
},
],
messages: {
thisAssignment: "Unexpected aliasing of 'this' to local variable.",
thisDestructure: "Unexpected aliasing of members of 'this' to local variables.",
},
},
defaultOptions: [
{
allowDestructuring: true,
allowedNames: [],
},
],
create(context, [{ allowDestructuring, allowedNames }]) {
return {
"VariableDeclarator[init.type='ThisExpression']"(node) {
const { id } = node;
if (allowDestructuring && id.type !== experimental_utils_1.AST_NODE_TYPES.Identifier) {
return;
}
const hasAllowedName = id.type === experimental_utils_1.AST_NODE_TYPES.Identifier
? allowedNames.includes(id.name)
: false;
if (!hasAllowedName) {
context.report({
node: id,
messageId: id.type === experimental_utils_1.AST_NODE_TYPES.Identifier
? 'thisAssignment'
: 'thisDestructure',
});
}
},
};
},
});
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