types-testing/dist/lib/compiler/get-type-checker.d.ts

Test TypeScript types at test runner runtime - Works seamlessly with Jest, Vitest, and Bun.

import { Assertion } from '..';
import ts from 'typescript';
/** @internal */
export declare const getTypeChecker: (program: ts.Program) => TypeChecker;
/** @internal */
export type TypeChecker = ts.TypeChecker & {
    /** @internal */
    __internal: {
        /** @internal */
        identifyTestCall(node: ts.Node): IdentifiedTestCall;
        /** @internal */
        postIdentifyTestCall(node: ts.CallExpression, forExpectCall: boolean): {
            callerNode: ts.Node | ts.LeftHandSideExpression;
            assertionCallExpressionText?: string;
            expectCallExpressionText?: string;
        };
    };
};
/** @internal */
export type AssertionName = keyof typeof Assertion;
/** @internal */
export type AssertionFn = (typeof Assertion)[AssertionName];
type AssertionCallProps = {
    assertionFn: AssertionFn;
    receivedType?: ts.Type;
    expectedType?: ts.Type;
    receivedTypeString?: string;
    expectedTypeString?: string;
    isNegated: boolean;
    needTypeArgument: boolean;
};
type ExpectCallProps = {
    receivedType?: ts.Type;
    expectedType?: never;
    isNegated?: never;
    needTypeArgument?: never;
};
type IdentifiedTestCall = null | {
    type: 'assertion';
    props: AssertionCallProps;
} | {
    type: 'expect';
    props: ExpectCallProps;
};
export {};