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Add test for invalid initializer in for..in (#19888)

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fisker Cheung authored and GitHub committed 2026-08-19 06:25:19 +08:00
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commit 91ee328608
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tests/format/js/_errors_/for-in-invalid-initializer/__snapshots__/format.test.js.snap
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// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
exports[`snippet: #0 format[acorn] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (let a = 1 in b);
| ^
Cause: for-in loop variable declaration may not have an initializer (1:5)"
`;
exports[`snippet: #0 format[espree] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (let a = 1 in b);
| ^
Cause: for-in loop variable declaration may not have an initializer"
`;
exports[`snippet: #0 format[flow] 1`] = `
"Invalid left-hand side in for-in (1:6)
> 1 | for (let a = 1 in b);
| ^
Cause: Invalid left-hand side in for-in (1:5)"
`;
exports[`snippet: #0 format[hermes] 1`] = `
"for-in/for-of variable declaration may not be initialized (1:14)
> 1 | for (let a = 1 in b);
| ^
Cause: for-in/for-of variable declaration may not be initialized (1:13)
for (let a = 1 in b);
^"
`;
exports[`snippet: #0 format[meriyah] 1`] = `
"'for-in' loop head declarations can not have an initializer (1:10)
> 1 | for (let a = 1 in b);
| ^^^^^^^^
Cause: [1:9-1:17]: 'for-in' loop head declarations can not have an initializer"
`;
exports[`snippet: #0 format[oxc] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (let a = 1 in b);
| ^^^^^^^^^"
`;
exports[`snippet: #0 format[oxc-ts] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (let a = 1 in b);
| ^^^^^^^^^"
`;
exports[`snippet: #0 format[typescript] 1`] = `
"The variable declaration of a 'for...in' statement cannot have an initializer. (1:10)
> 1 | for (let a = 1 in b);
| ^^^^^
Cause: The variable declaration of a 'for...in' statement cannot have an initializer."
`;
exports[`snippet: #1 format[acorn] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (const a = 1 in b);
| ^
Cause: for-in loop variable declaration may not have an initializer (1:5)"
`;
exports[`snippet: #1 format[espree] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (const a = 1 in b);
| ^
Cause: for-in loop variable declaration may not have an initializer"
`;
exports[`snippet: #1 format[flow] 1`] = `
"Invalid left-hand side in for-in (1:6)
> 1 | for (const a = 1 in b);
| ^
Cause: Invalid left-hand side in for-in (1:5)"
`;
exports[`snippet: #1 format[hermes] 1`] = `
"for-in/for-of variable declaration may not be initialized (1:16)
> 1 | for (const a = 1 in b);
| ^
Cause: for-in/for-of variable declaration may not be initialized (1:15)
for (const a = 1 in b);
^"
`;
exports[`snippet: #1 format[meriyah] 1`] = `
"'for-in' loop head declarations can not have an initializer (1:12)
> 1 | for (const a = 1 in b);
| ^^^^^^^^
Cause: [1:11-1:19]: 'for-in' loop head declarations can not have an initializer"
`;
exports[`snippet: #1 format[oxc] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (const a = 1 in b);
| ^^^^^^^^^^^"
`;
exports[`snippet: #1 format[oxc-ts] 1`] = `
"for-in loop variable declaration may not have an initializer (1:6)
> 1 | for (const a = 1 in b);
| ^^^^^^^^^^^"
`;
exports[`snippet: #1 format[typescript] 1`] = `
"The variable declaration of a 'for...in' statement cannot have an initializer. (1:12)
> 1 | for (const a = 1 in b);
| ^^^^^
Cause: The variable declaration of a 'for...in' statement cannot have an initializer."
`;
exports[`snippet: #2 format[acorn] 1`] = `
"for-in loop variable declaration may not have an initializer (1:7)
> 1 | {for (using a = 1 in b);}
| ^
Cause: for-in loop variable declaration may not have an initializer (1:6)"
`;
exports[`snippet: #2 format[espree] 1`] = `
"for-in loop variable declaration may not have an initializer (1:7)
> 1 | {for (using a = 1 in b);}
| ^
Cause: for-in loop variable declaration may not have an initializer"
`;
exports[`snippet: #2 format[flow] 1`] = `
"Unexpected identifier, expected the token \`;\` (1:13)
> 1 | {for (using a = 1 in b);}
| ^
Cause: Unexpected identifier, expected the token \`;\` (1:12)"
`;
exports[`snippet: #2 format[hermes] 1`] = `
"';' or 'in' expected inside 'for' (1:15)
> 1 | {for (using a = 1 in b);}
| ^
Cause: ';' or 'in' expected inside 'for' (1:14)
{for (using a = 1 in b);}
~~~~~~~~~~~~~^"
`;
exports[`snippet: #2 format[meriyah] 1`] = `
"'for-in' loop head declarations can not have an initializer (1:13)
> 1 | {for (using a = 1 in b);}
| ^^^^^^^^
Cause: [1:12-1:20]: 'for-in' loop head declarations can not have an initializer"
`;
exports[`snippet: #2 format[oxc] 1`] = `
"Expected \`;\` but found \`)\` (1:23)
> 1 | {for (using a = 1 in b);}
| ^"
`;
exports[`snippet: #2 format[oxc-ts] 1`] = `
"Expected \`;\` but found \`)\` (1:23)
> 1 | {for (using a = 1 in b);}
| ^"
`;
exports[`snippet: #2 format[typescript] 1`] = `
"The variable declaration of a 'for...in' statement cannot have an initializer. (1:13)
> 1 | {for (using a = 1 in b);}
| ^^^^^
Cause: The variable declaration of a 'for...in' statement cannot have an initializer."
`;
tests/format/js/_errors_/for-in-invalid-initializer/format.test.js
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runFormatTest(
{
importMeta: import.meta,
snippets: [
"for (let a = 1 in b);",
"for (const a = 1 in b);",
"{for (using a = 1 in b);}",
],
},
[
// "babel",
"acorn",
"espree",
"meriyah",
"typescript",
// "babel-ts",
"oxc",
"oxc-ts",
// "yuku",
// "yuku-ts",
"flow",
"hermes",
// "__babel_estree",
],
);