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