Function makeStrictType

packages/graph/src/test/Graph.test.ts:758–776

(
  typeChecker: (value: unknown) => boolean,
  typeName: string,
)

// Helper to create a strict type validator
function makeStrictType<T>(
  typeChecker: (value: unknown) => boolean,
  typeName: string,
): StandardSchemaV1<T> {
  return {
    "~standard": {
      version: 1,
      vendor: "codemix-test",
      validate: (value) => {
        if (typeChecker(value)) {
          return { value: value as T };
        }
        return {
          issues: [{ message: `Expected ${typeName}, received ${typeof value}` }],
        };
      },
    },
  };
}

// Schema with strict type validation
const strictSchema = {