102 lines
2.8 KiB
TypeScript
102 lines
2.8 KiB
TypeScript
import { RuleTester } from "./support/RuleTester";
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import rule = require("../rules/only-arrow-functions");
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const ruleTester = new RuleTester({
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parserOptions: {
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warnOnUnsupportedTypeScriptVersion: false,
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},
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parser: require.resolve("@typescript-eslint/parser"),
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});
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ruleTester.run("only-arrow-functions", rule, {
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valid: [{
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code: `const a = () => {};`,
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}, {
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code: `((func) => func())(() => {});`,
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}, {
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code: `function* generator() {}`,
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}, {
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code: `let generator = function*() {}`,
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}, {
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code: `function hasThisParameter(this) {}`,
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}, {
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code: `let hasThisParameter = function(this) {}`,
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}, {
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code: `let usesThis = function() { this; }`,
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}, {
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code: `let usesThis2 = function(foo = this) {}`,
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}, {
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code: `
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let fn = function fn() {};
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function z() {};
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`,
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options: [{ allowNamedFunctions: true }],
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}, {
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code: `
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function fn() {};
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let generator = function*() {}
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function hasThisParameter(this) {}
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let hasThisParameter = function(this) {}
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`,
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options: [{ allowDeclarations: true }],
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}, {
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code: `
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class A {
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test() {}
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}
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`,
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}, {
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code: `
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const obj = {
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test() {}
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}
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`,
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}],
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invalid: [{
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code: `function foo(a: any): any {}`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `let b = function () {};`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `function c() {}`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `((func) => func())(function e(): void {});`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `
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let notUsesThis = function() {
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function f() { this; }
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}
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`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `
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let notUsesThis2 = function() {
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return class { method() { this; } }
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}
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`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `export function exported() {}`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `async function asyncFunction() {}`,
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `
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let b = function () {};
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((func) => func())(function e(): void {});
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`,
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options: [{ allowDeclarations: true }],
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errors: [{ messageId: "onlyArrowFunctionsError" }, { messageId: "onlyArrowFunctionsError" }],
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}, {
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code: `const x = function() {}`,
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options: [{ allowNamedFunctions: true }],
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errors: [{ messageId: "onlyArrowFunctionsError" }],
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}],
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});
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