| "use strict"; |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| exports.NullThrowsReasons = exports.nullThrows = void 0; |
| /** |
| * A set of common reasons for calling nullThrows |
| */ |
| const NullThrowsReasons = { |
| MissingParent: 'Expected node to have a parent.', |
| MissingToken: (token, thing) => `Expected to find a ${token} for the ${thing}.`, |
| }; |
| exports.NullThrowsReasons = NullThrowsReasons; |
| /** |
| * Assert that a value must not be null or undefined. |
| * This is a nice explicit alternative to the non-null assertion operator. |
| */ |
| function nullThrows(value, message) { |
| // this function is primarily used to keep types happy in a safe way |
| // i.e. is used when we expect that a value is never nullish |
| // this means that it's pretty much impossible to test the below if... |
| // so ignore it in coverage metrics. |
| /* istanbul ignore if */ |
| if (value === null || value === undefined) { |
| throw new Error(`Non-null Assertion Failed: ${message}`); |
| } |
| return value; |
| } |
| exports.nullThrows = nullThrows; |
| //# sourceMappingURL=nullThrows.js.map |
