json-schema-library/src/utils/getPrecision.ts

Customizable and hackable json-validator and json-schema utilities for traversal, data generation and validation

/**
 * returns the floating point precision of a decimal number or 0
 */
export function getPrecision(value: number): number {
    const string = `${value}`;
    if (string.includes("e-")) {
        return parseInt(string.replace(/.*e-/, ""));
    }
    const index = string.indexOf(".");
    return index === -1 ? 0 : string.length - (index + 1);
}