Merge pull request #13900 from Microsoft/object-literal-freshness-with-spread
Object literal freshness errors with spreads
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commit
86661b5272
4 changed files with 31 additions and 0 deletions
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@ -13306,6 +13306,8 @@ namespace ts {
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if (spread.flags & TypeFlags.Object) {
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// only set the symbol and flags if this is a (fresh) object type
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spread.flags |= propagatedFlags;
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spread.flags |= TypeFlags.FreshLiteral;
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(spread as ObjectType).objectFlags |= ObjectFlags.ObjectLiteral;
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spread.symbol = node.symbol;
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}
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return spread;
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@ -0,0 +1,11 @@
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tests/cases/compiler/objectLiteralFreshnessWithSpread.ts(2,35): error TS2322: Type '{ z: number; b: number; extra: number; a: number; }' is not assignable to type '{ a: any; b: any; }'.
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Object literal may only specify known properties, and 'z' does not exist in type '{ a: any; b: any; }'.
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==== tests/cases/compiler/objectLiteralFreshnessWithSpread.ts (1 errors) ====
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let x = { b: 1, extra: 2 }
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let xx: { a, b } = { a: 1, ...x, z: 3 } // error for 'z', no error for 'extra'
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~~~~
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!!! error TS2322: Type '{ z: number; b: number; extra: number; a: number; }' is not assignable to type '{ a: any; b: any; }'.
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!!! error TS2322: Object literal may only specify known properties, and 'z' does not exist in type '{ a: any; b: any; }'.
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@ -0,0 +1,16 @@
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//// [objectLiteralFreshnessWithSpread.ts]
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let x = { b: 1, extra: 2 }
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let xx: { a, b } = { a: 1, ...x, z: 3 } // error for 'z', no error for 'extra'
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//// [objectLiteralFreshnessWithSpread.js]
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var __assign = (this && this.__assign) || Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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var x = { b: 1, extra: 2 };
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var xx = __assign({ a: 1 }, x, { z: 3 }); // error for 'z', no error for 'extra'
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2
tests/cases/compiler/objectLiteralFreshnessWithSpread.ts
Normal file
2
tests/cases/compiler/objectLiteralFreshnessWithSpread.ts
Normal file
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@ -0,0 +1,2 @@
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let x = { b: 1, extra: 2 }
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let xx: { a, b } = { a: 1, ...x, z: 3 } // error for 'z', no error for 'extra'
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