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pve-eslint/eslint/tests/lib/rules/no-use-before-define.js
Dominik Csapak 8f9d1d4df0 import 8.23.1 source 
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2022-09-15 11:13:41 +02:00

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/**
* @fileoverview Tests for no-use-before-define rule.
* @author Ilya Volodin
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-use-before-define"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("no-use-before-define", rule, {
valid: [
"unresolved",
"Array",
"function foo () { arguments; }",
"var a=10; alert(a);",
"function b(a) { alert(a); }",
"Object.hasOwnProperty.call(a);",
"function a() { alert(arguments);}",
{ code: "a(); function a() { alert(arguments); }", options: ["nofunc"] },
{ code: "(() => { var a = 42; alert(a); })();", parserOptions: { ecmaVersion: 6 } },
"a(); try { throw new Error() } catch (a) {}",
{ code: "class A {} new A();", parserOptions: { ecmaVersion: 6 } },
"var a = 0, b = a;",
{ code: "var {a = 0, b = a} = {};", parserOptions: { ecmaVersion: 6 } },
{ code: "var [a = 0, b = a] = {};", parserOptions: { ecmaVersion: 6 } },
"function foo() { foo(); }",
"var foo = function() { foo(); };",
"var a; for (a in a) {}",
{ code: "var a; for (a of a) {}", parserOptions: { ecmaVersion: 6 } },
{ code: "let a; class C { static { a; } }", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { static { let a; a; } }", parserOptions: { ecmaVersion: 2022 } },
// Block-level bindings
{ code: "\"use strict\"; a(); { function a() {} }", parserOptions: { ecmaVersion: 6 } },
{ code: "\"use strict\"; { a(); function a() {} }", options: ["nofunc"], parserOptions: { ecmaVersion: 6 } },
{ code: "switch (foo) { case 1: { a(); } default: { let a; }}", parserOptions: { ecmaVersion: 6 } },
{ code: "a(); { let a = function () {}; }", parserOptions: { ecmaVersion: 6 } },
// object style options
{ code: "a(); function a() { alert(arguments); }", options: [{ functions: false }] },
{ code: "\"use strict\"; { a(); function a() {} }", options: [{ functions: false }], parserOptions: { ecmaVersion: 6 } },
{ code: "function foo() { new A(); } class A {};", options: [{ classes: false }], parserOptions: { ecmaVersion: 6 } },
// "variables" option
{
code: "function foo() { bar; } var bar;",
options: [{ variables: false }]
},
{
code: "var foo = () => bar; var bar;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "class C { static { () => foo; let foo; } }",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 }
},
// Tests related to class definition evaluation. These are not TDZ errors.
{ code: "class C extends (class { method() { C; } }) {}", parserOptions: { ecmaVersion: 6 } },
{ code: "(class extends (class { method() { C; } }) {});", parserOptions: { ecmaVersion: 6 } },
{ code: "const C = (class extends (class { method() { C; } }) {});", parserOptions: { ecmaVersion: 6 } },
{ code: "class C extends (class { field = C; }) {}", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class extends (class { field = C; }) {});", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = (class extends (class { field = C; }) {});", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { [() => C](){} }", parserOptions: { ecmaVersion: 6 } },
{ code: "(class C { [() => C](){} });", parserOptions: { ecmaVersion: 6 } },
{ code: "const C = class { [() => C](){} };", parserOptions: { ecmaVersion: 6 } },
{ code: "class C { static [() => C](){} }", parserOptions: { ecmaVersion: 6 } },
{ code: "(class C { static [() => C](){} });", parserOptions: { ecmaVersion: 6 } },
{ code: "const C = class { static [() => C](){} };", parserOptions: { ecmaVersion: 6 } },
{ code: "class C { [() => C]; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { [() => C]; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = class { [() => C]; };", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { static [() => C]; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { static [() => C]; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = class { static [() => C]; };", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { method() { C; } }", parserOptions: { ecmaVersion: 6 } },
{ code: "(class C { method() { C; } });", parserOptions: { ecmaVersion: 6 } },
{ code: "const C = class { method() { C; } };", parserOptions: { ecmaVersion: 6 } },
{ code: "class C { static method() { C; } }", parserOptions: { ecmaVersion: 6 } },
{ code: "(class C { static method() { C; } });", parserOptions: { ecmaVersion: 6 } },
{ code: "const C = class { static method() { C; } };", parserOptions: { ecmaVersion: 6 } },
{ code: "class C { field = C; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { field = C; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = class { field = C; };", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { static field = C; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { static field = C; });", parserOptions: { ecmaVersion: 2022 } }, // `const C = class { static field = C; };` is TDZ error
{ code: "class C { static field = class { static field = C; }; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { static field = class { static field = C; }; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { field = () => C; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { field = () => C; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = class { field = () => C; };", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { static field = () => C; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { static field = () => C; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = class { static field = () => C; };", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { field = class extends C {}; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { field = class extends C {}; });", parserOptions: { ecmaVersion: 2022 } },
{ code: "const C = class { field = class extends C {}; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "class C { static field = class extends C {}; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { static field = class extends C {}; });", parserOptions: { ecmaVersion: 2022 } }, // `const C = class { static field = class extends C {}; };` is TDZ error
{ code: "class C { static field = class { [C]; }; }", parserOptions: { ecmaVersion: 2022 } },
{ code: "(class C { static field = class { [C]; }; });", parserOptions: { ecmaVersion: 2022 } }, // `const C = class { static field = class { [C]; } };` is TDZ error
{ code: "const C = class { static field = class { field = C; }; };", parserOptions: { ecmaVersion: 2022 } },
{
code: "class C { method() { a; } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "class C { static method() { a; } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "class C { field = a; } let a;", // `class C { static field = a; } let a;` is TDZ error
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { field = D; } class D {}", // `class C { static field = D; } class D {}` is TDZ error
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { field = class extends D {}; } class D {}", // `class C { static field = class extends D {}; } class D {}` is TDZ error
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { field = () => a; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static field = () => a; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { field = () => D; } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static field = () => D; } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static field = class { field = a; }; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { C; } }", // `const C = class { static { C; } }` is TDZ error
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { C; } static {} static { C; } }",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "(class C { static { C; } })",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { class D extends C {} } }",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { (class { static { C } }) } }",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { () => C; } }",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "(class C { static { () => C; } })",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "const C = class { static { () => C; } }",
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { () => D; } } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "class C { static { () => a; } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 }
},
{
code: "const C = class C { static { C.x; } }",
parserOptions: { ecmaVersion: 2022 }
},
// "allowNamedExports" option
{
code: "export { a }; const a = 1;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" }
},
{
code: "export { a as b }; const a = 1;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" }
},
{
code: "export { a, b }; let a, b;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" }
},
{
code: "export { a }; var a;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" }
},
{
code: "export { f }; function f() {}",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" }
},
{
code: "export { C }; class C {}",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" }
}
],
invalid: [
{
code: "a++; var a=19;",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "a++; var a=19;",
parserOptions: { parserOptions: { ecmaVersion: 6 } },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "a++; var a=19;",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "a(); var a=function() {};",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "alert(a[1]); var a=[1,3];",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "a(); function a() { alert(b); var b=10; a(); }",
errors: [
{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
},
{
messageId: "usedBeforeDefined",
data: { name: "b" },
type: "Identifier"
}
]
},
{
code: "a(); var a=function() {};",
options: ["nofunc"],
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "(() => { alert(a); var a = 42; })();",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "(() => a())(); function a() { }",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "\"use strict\"; a(); { function a() {} }",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "a(); try { throw new Error() } catch (foo) {var a;}",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var f = () => a; var a;",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "new A(); class A {};",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
{
code: "function foo() { new A(); } class A {};",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
{
code: "new A(); var A = class {};",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
{
code: "function foo() { new A(); } var A = class {};",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
// Block-level bindings
{
code: "a++; { var a; }",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "\"use strict\"; { a(); function a() {} }",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "{a; let a = 1}",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "switch (foo) { case 1: a();\n default: \n let a;}",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "if (true) { function foo() { a; } let a;}",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
// object style options
{
code: "a(); var a=function() {};",
options: [{ functions: false, classes: false }],
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "new A(); class A {};",
options: [{ functions: false, classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
{
code: "new A(); var A = class {};",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
{
code: "function foo() { new A(); } var A = class {};",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "A" },
type: "Identifier"
}]
},
// invalid initializers
{
code: "var a = a;",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "let a = a + b;",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "const a = foo(a);",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "function foo(a = a) {}",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var {a = a} = [];",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var [a = a] = [];",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var {b = a, a} = {};",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var [b = a, a] = {};",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var {a = 0} = a;",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "var [a = 0] = a;",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "for (var a in a) {}",
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
{
code: "for (var a of a) {}",
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" },
type: "Identifier"
}]
},
// "variables" option
{
code: "function foo() { bar; var bar = 1; } var bar;",
options: [{ variables: false }],
errors: [{
messageId: "usedBeforeDefined",
data: { name: "bar" },
type: "Identifier"
}]
},
{
code: "foo; var foo;",
options: [{ variables: false }],
errors: [{
messageId: "usedBeforeDefined",
data: { name: "foo" },
type: "Identifier"
}]
},
// https://github.com/eslint/eslint/issues/10227
{
code: "for (let x = x;;); let x = 0",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
{
code: "for (let x in xs); let xs = []",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "xs" }
}]
},
{
code: "for (let x of xs); let xs = []",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "xs" }
}]
},
{
code: "try {} catch ({message = x}) {} let x = ''",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
{
code: "with (obj) x; let x = {}",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
// WithStatements.
{
code: "with (x); let x = {}",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
{
code: "with (obj) { x } let x = {}",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
{
code: "with (obj) { if (a) { x } } let x = {}",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
{
code: "with (obj) { (() => { if (a) { x } })() } let x = {}",
parserOptions: { ecmaVersion: 2015 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "x" }
}]
},
// Tests related to class definition evaluation. These are TDZ errors.
{
code: "class C extends C {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class extends C {};",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C extends (class { [C](){} }) {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class extends (class { [C](){} }) {};",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C extends (class { static field = C; }) {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class extends (class { static field = C; }) {};",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { [C](){} }",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "(class C { [C](){} });",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { [C](){} };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { static [C](){} }",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "(class C { static [C](){} });",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static [C](){} };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { [C]; }",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "(class C { [C]; });",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { [C]; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { [C] = foo; }",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "(class C { [C] = foo; });",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { [C] = foo; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { static [C]; }",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "(class C { static [C]; });",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static [C]; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { static [C] = foo; }",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "(class C { static [C] = foo; });",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static [C] = foo; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static field = C; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static field = class extends C {}; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static field = class { [C]; } };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static field = class { static field = C; }; };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C extends D {} class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "D" }
}]
},
{
code: "class C extends (class { [a](){} }) {} let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C extends (class { static field = a; }) {} let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { [a]() {} } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static [a]() {} } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 6 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { [a]; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static [a]; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { [a] = foo; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static [a] = foo; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static field = a; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static field = D; } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "D" }
}]
},
{
code: "class C { static field = class extends D {}; } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "D" }
}]
},
{
code: "class C { static field = class { [a](){} } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static field = class { static field = a; }; } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "const C = class { static { C; } };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "const C = class { static { (class extends C {}); } };",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "class C { static { a; } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static { D; } } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "D" }
}]
},
{
code: "class C { static { (class extends D {}); } } class D {}",
options: [{ classes: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "D" }
}]
},
{
code: "class C { static { (class { [a](){} }); } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "class C { static { (class { static field = a; }); } } let a;",
options: [{ variables: false }],
parserOptions: { ecmaVersion: 2022 },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
/*
* TODO(mdjermanovic): Add the following test cases once https://github.com/eslint/eslint-scope/issues/59 gets fixed:
* {
* code: "(class C extends C {});",
* options: [{ classes: false }],
* parserOptions: { ecmaVersion: 6 },
* errors: [{
* messageId: "usedBeforeDefined",
* data: { name: "C" }
* }]
* },
* {
* code: "(class C extends (class { [C](){} }) {});",
* options: [{ classes: false }],
* parserOptions: { ecmaVersion: 6 },
* errors: [{
* messageId: "usedBeforeDefined",
* data: { name: "C" }
* }]
* },
* {
* code: "(class C extends (class { static field = C; }) {});",
* options: [{ classes: false }],
* parserOptions: { ecmaVersion: 2022 },
* errors: [{
* messageId: "usedBeforeDefined",
* data: { name: "C" }
* }]
* }
*/
// "allowNamedExports" option
{
code: "export { a }; const a = 1;",
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export { a }; const a = 1;",
options: [{}],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export { a }; const a = 1;",
options: [{ allowNamedExports: false }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export { a }; const a = 1;",
options: ["nofunc"],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export { a as b }; const a = 1;",
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export { a, b }; let a, b;",
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [
{
messageId: "usedBeforeDefined",
data: { name: "a" }
},
{
messageId: "usedBeforeDefined",
data: { name: "b" }
}
]
},
{
code: "export { a }; var a;",
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export { f }; function f() {}",
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "f" }
}]
},
{
code: "export { C }; class C {}",
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "C" }
}]
},
{
code: "export const foo = a; const a = 1;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export default a; const a = 1;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export function foo() { return a; }; const a = 1;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
},
{
code: "export class C { foo() { return a; } }; const a = 1;",
options: [{ allowNamedExports: true }],
parserOptions: { ecmaVersion: 2015, sourceType: "module" },
errors: [{
messageId: "usedBeforeDefined",
data: { name: "a" }
}]
}
]
});
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