unicorn/prefer-date-now
Require Date.now() to get the current time in milliseconds
fixable
new Date().getTime() creates a Date object only to read one number from it. Date.now() returns the same number without the object.
Turning a new Date() into a number is reported too, as in +new Date(), Number(new Date()), or arithmetic such as new Date() - start.
--fix rewrites everything except the arithmetic.
Configure#
Off by default. To turn it on:
bunfig.toml
[lint.rules]
"unicorn/prefer-date-now" = "error" # or "warn"Examples#
example.js3 problems
const start = new Date().getTime()Prefer Date.now() over new Date().getTime();
const stamp = +new Date()Prefer Date.now() over new Date();
const elapsed = new Date()Prefer Date.now() over new Date() - start;example.jsNo problems
const start = Date.now();
const stamp = Date.now();
const elapsed = Date.now() - start;
const created = new Date(user.createdAt).getTime();