@lodestar/flare
Version:
Beacon chain debugging tool
21 lines • 689 B
JavaScript
/**
* Parse string inclusive range: `0..32`, into an array of all values in that range
*/
export function parseRange(range) {
if (!range.includes("..")) {
throw Error(`Invalid range '${range}', must include '..'`);
}
const [from, to] = range.split("..").map((n) => parseInt(n));
if (Number.isNaN(from))
throw Error(`Invalid range from isNaN '${range}'`);
if (Number.isNaN(to))
throw Error(`Invalid range to isNaN '${range}'`);
if (from > to)
throw Error(`Invalid range from > to '${range}'`);
const arr = [];
for (let i = from; i <= to; i++) {
arr.push(i);
}
return arr;
}
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