@databricks/sql
Version:
Driver for connection to Databricks SQL via Thrift API.
49 lines • 1.85 kB
JavaScript
;
/* eslint-disable import/prefer-default-export */
Object.defineProperty(exports, "__esModule", { value: true });
exports.at = void 0;
// `Array.at` / `TypedArray.at` is supported only since Nodejs@16.6.0
// These methods are massively used by `apache-arrow@13`, but we have
// to use this version because older ones contain some other nasty bugs
// https://tc39.es/ecma262/multipage/abstract-operations.html#sec-tointegerorinfinity
function toIntegerOrInfinity(value) {
const result = Number(value);
// Return `0` for NaN; return `+Infinity` / `-Infinity` as is
if (!Number.isFinite(result)) {
return Number.isNaN(result) ? 0 : result;
}
return Math.trunc(result);
}
// https://tc39.es/ecma262/multipage/abstract-operations.html#sec-tolength
function toLength(value) {
const result = toIntegerOrInfinity(value);
return result > 0 ? Math.min(result, Number.MAX_SAFE_INTEGER) : 0;
}
// https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.at
function at(index) {
const length = toLength(this.length);
const relativeIndex = toIntegerOrInfinity(index);
const absoluteIndex = relativeIndex >= 0 ? relativeIndex : length + relativeIndex;
return absoluteIndex >= 0 && absoluteIndex < length ? this[absoluteIndex] : undefined;
}
exports.at = at;
const ArrayConstructors = [
global.Array,
global.Int8Array,
global.Uint8Array,
global.Uint8ClampedArray,
global.Int16Array,
global.Uint16Array,
global.Int32Array,
global.Uint32Array,
global.Float32Array,
global.Float64Array,
global.BigInt64Array,
global.BigUint64Array,
];
ArrayConstructors.forEach((ArrayConstructor) => {
if (typeof ArrayConstructor.prototype.at !== 'function') {
ArrayConstructor.prototype.at = at;
}
});
//# sourceMappingURL=polyfills.js.map