15 lines
956 B
Plaintext
15 lines
956 B
Plaintext
==== tests/cases/compiler/assignmentCompatFunctionsWithOptionalArgs.ts (3 errors) ====
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function foo(x: { id: number; name?: string; }): void;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! Function implementation expected.
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foo({ id: 1234 }); // Ok
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foo({ id: 1234, name: "hello" }); // Ok
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foo({ id: 1234, name: false }); // Error, name of wrong type
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~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! Argument of type '{ id: number; name: boolean; }' is not assignable to parameter of type '{ id: number; name?: string; }'.
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!!! Types of property 'name' are incompatible:
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!!! Type 'boolean' is not assignable to type 'string'.
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foo({ name: "hello" }); // Error, id required but missing
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~~~~~~~~~~~~~~~~~
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!!! Argument of type '{ name: string; }' is not assignable to parameter of type '{ id: number; name?: string; }'.
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!!! Property 'id' is missing in type '{ name: string; }'. |