Refactoring: made this work the exact same in under 10 lines

This commit is contained in:
looskie
2021-06-25 20:01:39 -04:00
parent a032e1bf77
commit 93744c947c

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@@ -1,44 +1,9 @@
interface DeconstructedSnowflake {
timestamp: number;
date: Date;
workerID: number;
processID: number;
increment: number;
binary: string;
}
const EPOCH = 1420070400000; // Discord's EPOCH
export function isSnowflake(snowflake: string): boolean {
const { timestamp } = deconstruct(snowflake);
return timestamp > EPOCH && timestamp <= 3619093655551;
// Snowflakes will never be a string
export function isSnowflake(snowflake: number | string): boolean {
snowflake = Number(snowflake);
return (
Number.isInteger(+snowflake) && snowflake > 4194304 && !isNaN(new Date(snowflake / 4194304 + EPOCH).getTime())
);
}
const deconstruct = (snowflake: string): DeconstructedSnowflake => {
const BINARY = idToBinary(snowflake).padStart(64, "0");
return {
timestamp: parseInt(BINARY.substring(0, 42), 2) + EPOCH,
get date() {
return new Date(this.timestamp);
},
workerID: parseInt(BINARY.substring(42, 47), 2),
processID: parseInt(BINARY.substring(47, 52), 2),
increment: parseInt(BINARY.substring(52, 64), 2),
binary: BINARY,
};
};
const idToBinary = (snowflake: string): string => {
let bin = "";
let high = parseInt(snowflake.slice(0, -10)) || 0;
let low = parseInt(snowflake.slice(-10));
while (low > 0 || high > 0) {
bin = String(low & 1) + bin;
low = Math.floor(low / 2);
if (high > 0) {
low += 5000000000 * (high % 2);
high = Math.floor(high / 2);
}
}
return bin;
};