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37 lines
708 B
JavaScript
37 lines
708 B
JavaScript
12 months ago
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'use strict';
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const assert = require('assert');
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const { Long } = require('bson');
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/**
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* Given a value, cast it to a BigInt, or throw an `Error` if the value
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* cannot be casted. `null` and `undefined` are considered valid.
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*
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* @param {Any} value
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* @return {Number}
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* @throws {Error} if `value` is not one of the allowed values
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* @api private
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*/
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module.exports = function castBigInt(val) {
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if (val == null) {
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return val;
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}
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if (val === '') {
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return null;
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}
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if (typeof val === 'bigint') {
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return val;
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}
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if (val instanceof Long) {
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return val.toBigInt();
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}
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if (typeof val === 'string' || typeof val === 'number') {
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return BigInt(val);
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}
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assert.ok(false);
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};
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