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Function: getTypeCheckerIsTypeAssignableToResult()

function getTypeCheckerIsTypeAssignableToResult(
    checker: Readonly<ts.TypeChecker>,
    source: Readonly<ts.Type>,
    target: Readonly<ts.Type>
): boolean | undefined;

Defined in: _internal/type-checker-compat.ts:110

Read checker.isTypeAssignableTo when the host TypeScript version provides it.

Parametersโ€‹

checkerโ€‹

Readonly<ts.TypeChecker>

TypeScript type checker.

sourceโ€‹

Readonly<ts.Type>

Candidate source type.

targetโ€‹

Readonly<ts.Type>

Candidate target type.

Returnsโ€‹

boolean | undefined

Assignability result when available; otherwise undefined.