swc/crates/swc_ecma_minifier/tests/fixture/issues/5682/input.js
Donny/강동윤 aacf7aaf80
feat(es/minifier): Drop function identifier in a single pass (#5901)
**Description:**

We only inline function declarations if `ref_count` is 1, so we don't need to preserve the name of the function.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5682.
2022-09-19 15:07:56 +00:00

114 lines
3.0 KiB
JavaScript

const s = 1000;
const m = s * 60;
const h = m * 60;
const d = h * 24;
const w = d * 7;
const y = d * 365.25;
function msFn(value, options) {
try {
if (typeof value === 'string' && value.length > 0) {
return parse(value);
} else if (typeof value === 'number' && isFinite(value)) {
return options?.long ? fmtLong(value) : fmtShort(value);
}
throw new Error('Value is not a string or number.');
} catch (error) {
const message = isError(error) ? `${error.message}. value=${JSON.stringify(value)}` : 'An unknown error has occurred.';
throw new Error(message);
}
}
function parse(str) {
if (str.length > 100) {
throw new Error('Value exceeds the maximum length of 100 characters.');
}
const match = /^(?<value>-?(?:\d+)?\.?\d+) *(?<type>milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(str);
const groups = match?.groups;
if (!groups) {
return NaN;
}
const n = parseFloat(groups.value);
const type = (groups.type || 'ms').toLowerCase();
switch (type) {
case 'years':
case 'year':
case 'yrs':
case 'yr':
case 'y':
return n * y;
case 'weeks':
case 'week':
case 'w':
return n * w;
case 'days':
case 'day':
case 'd':
return n * d;
case 'hours':
case 'hour':
case 'hrs':
case 'hr':
case 'h':
return n * h;
case 'minutes':
case 'minute':
case 'mins':
case 'min':
case 'm':
return n * m;
case 'seconds':
case 'second':
case 'secs':
case 'sec':
case 's':
return n * s;
case 'milliseconds':
case 'millisecond':
case 'msecs':
case 'msec':
case 'ms':
return n;
default:
throw new Error(`The unit ${type} was matched, but no matching case exists.`);
}
}
export default msFn;
function fmtShort(ms) {
const msAbs = Math.abs(ms);
if (msAbs >= d) {
return `${Math.round(ms / d)}d`;
}
if (msAbs >= h) {
return `${Math.round(ms / h)}h`;
}
if (msAbs >= m) {
return `${Math.round(ms / m)}m`;
}
if (msAbs >= s) {
return `${Math.round(ms / s)}s`;
}
return `${ms}ms`;
}
function fmtLong(ms) {
const msAbs = Math.abs(ms);
if (msAbs >= d) {
return plural(ms, msAbs, d, 'day');
}
if (msAbs >= h) {
return plural(ms, msAbs, h, 'hour');
}
if (msAbs >= m) {
return plural(ms, msAbs, m, 'minute');
}
if (msAbs >= s) {
return plural(ms, msAbs, s, 'second');
}
return `${ms} ms`;
}
function plural(ms, msAbs, n, name) {
const isPlural = msAbs >= n * 1.5;
return `${Math.round(ms / n)} ${name}${isPlural ? 's' : ''}`;
}
function isError(value) {
return typeof value === 'object' && value !== null && 'message' in value;
}