You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
34 lines
1.0 KiB
TypeScript
34 lines
1.0 KiB
TypeScript
// Refactored from
|
|
// https://stackoverflow.com/questions/2685911/is-there-a-way-to-round-numbers-into-a-reader-friendly-format-e-g-1-1k
|
|
|
|
const abbreviations = ['k', 'm', 'b', 't'];
|
|
|
|
export function abbreviateNumber(number: number, decimals: number = 2): string {
|
|
let result = String(number);
|
|
const d = 10 ** decimals;
|
|
|
|
// Go through the array backwards, so we do the largest first
|
|
for (let i = abbreviations.length - 1; i >= 0; i--) {
|
|
// Convert array index to "1000", "1000000", etc
|
|
const size = 10 ** ((i + 1) * 3);
|
|
|
|
// If the number is bigger or equal do the abbreviation
|
|
if (size <= number) {
|
|
// Here, we multiply by decimals, round, and then divide by decimals.
|
|
// This gives us nice rounding to a particular decimal place.
|
|
let n = Math.round((number * d) / size) / d;
|
|
|
|
// Handle special case where we round up to the next abbreviation
|
|
if (n === 1000 && i < abbreviations.length - 1) {
|
|
n = 1;
|
|
i++;
|
|
}
|
|
|
|
result = String(n) + abbreviations[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|