@moonwell-fi/moonwell-sdk/_cjs/common/getBlockNumberAtTimestamp.js

TypeScript Interface for Moonwell

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getBlockNumberAtTimestamp = getBlockNumberAtTimestamp;
const MAX_ITERATIONS = 8;
async function getBlockNumberAtTimestamp(publicClient, targetTimestamp) {
    const latest = await publicClient.getBlock({ blockTag: "latest" });
    if (targetTimestamp >= latest.timestamp)
        return latest.number;
    if (latest.number === 0n)
        return latest.number;
    const first = await publicClient.getBlock({ blockNumber: 1n });
    if (targetTimestamp <= first.timestamp)
        return first.number;
    let lo = first.number;
    let loTs = first.timestamp;
    let hi = latest.number;
    let hiTs = latest.timestamp;
    for (let i = 0; i < MAX_ITERATIONS; i += 1) {
        if (hi - lo <= 1n)
            break;
        const tsRange = hiTs - loTs;
        if (tsRange <= 0n)
            break;
        const offset = ((targetTimestamp - loTs) * (hi - lo)) / tsRange;
        let mid = lo + offset;
        if (mid <= lo)
            mid = lo + 1n;
        if (mid >= hi)
            mid = hi - 1n;
        const block = await publicClient.getBlock({ blockNumber: mid });
        if (block.timestamp <= targetTimestamp) {
            lo = mid;
            loTs = block.timestamp;
        }
        else {
            hi = mid;
            hiTs = block.timestamp;
        }
    }
    return lo;
}
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