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feature(progress): re-vamps the performance log for ease of use
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,32 +1,85 @@ | ||
| const chalk = require("chalk"); | ||
|
|
||
| const MS_PER_SECOND = 1000; | ||
| const DECIMAL_BASE = 10; | ||
| const MAX_EXPECTED_LENGTH = 9; | ||
| const MS_PER_MICRO_SECOND = 0.001; | ||
| const MAX_LENGTH_EXPECTED = 12; | ||
| const NUMBER_OF_COLUMNS = 8; | ||
| const K = 1024; | ||
| /* | ||
| * using `undefined` as the first parameter to Intl.NumberFormat so | ||
| * it will fall back to the 'current' locale. Another way to | ||
| * accomplish this is to use a non-existent language (e.g. `zz`) also works, | ||
| * but this seems to be the lesser of the two evil as `undefined` is closer | ||
| * to the intent of just skipping the optional parameter. | ||
| */ | ||
| // eslint-disable-next-line no-undefined | ||
| const LOCALE = undefined; | ||
|
|
||
| const gTimeFormat = new Intl.NumberFormat(LOCALE, { | ||
| style: "unit", | ||
| unit: "millisecond", | ||
| unitDisplay: "narrow", | ||
| maximumFractionDigits: 0, | ||
| }).format; | ||
| const gSizeFormat = new Intl.NumberFormat(LOCALE, { | ||
| signDisplay: "exceptZero", | ||
| style: "unit", | ||
| unit: "kilobyte", | ||
| unitDisplay: "narrow", | ||
| maximumFractionDigits: 0, | ||
| }).format; | ||
|
|
||
| const pad = (pString) => pString.padStart(MAX_LENGTH_EXPECTED); | ||
|
|
||
| function formatTime(pNumber) { | ||
| return Math.round(MS_PER_SECOND * pNumber) | ||
| .toString(DECIMAL_BASE) | ||
| .concat("ms") | ||
| .padStart(MAX_EXPECTED_LENGTH); | ||
| function formatHeader() { | ||
| return chalk | ||
| .bold( | ||
| `${pad("elapsed real")} ${pad("user")} ${pad("system")} ${pad( | ||
| "∆ rss" | ||
| )} ${pad("∆ heapTotal")} ${pad("∆ heapUsed")} ${pad( | ||
| "∆ external" | ||
| )} after step...\n` | ||
| ) | ||
| .concat( | ||
| `${`${"-".repeat(MAX_LENGTH_EXPECTED)} `.repeat(NUMBER_OF_COLUMNS)}\n` | ||
| ); | ||
| } | ||
|
|
||
| function formatTime(pNumber, pConversionMultiplier = MS_PER_SECOND) { | ||
| return gTimeFormat(pConversionMultiplier * pNumber).padStart( | ||
| MAX_LENGTH_EXPECTED | ||
| ); | ||
| } | ||
|
|
||
| function formatMemory(pBytes) { | ||
| return Math.round(pBytes / K / K) | ||
| .toString(DECIMAL_BASE) | ||
| .concat("Mb") | ||
| .padStart(MAX_EXPECTED_LENGTH); | ||
| const lReturnValue = gSizeFormat(pBytes / K).padStart(MAX_LENGTH_EXPECTED); | ||
|
|
||
| return pBytes < 0 ? chalk.blue(lReturnValue) : lReturnValue; | ||
| } | ||
|
|
||
| function formatPerfLine(pTime, pPreviousTime, pMessage) { | ||
| return `${formatTime(pTime - pPreviousTime)} ${formatMemory( | ||
| process.memoryUsage().rss | ||
| )} ${formatMemory(process.memoryUsage().heapTotal)} ${formatMemory( | ||
| process.memoryUsage().heapUsed | ||
| )} ${formatMemory(process.memoryUsage().external)} ${pMessage}\n`; | ||
| function formatPerfLine({ | ||
| elapsedTime, | ||
| elapsedUser, | ||
| elapsedSystem, | ||
| deltaRss, | ||
| deltaHeapUsed, | ||
| deltaHeapTotal, | ||
| deltaExternal, | ||
| message, | ||
| }) { | ||
| return `${formatTime(elapsedTime)} ${formatTime( | ||
| elapsedUser, | ||
| MS_PER_MICRO_SECOND | ||
| )} ${formatTime(elapsedSystem, MS_PER_MICRO_SECOND)} ${formatMemory( | ||
| deltaRss | ||
| )} ${formatMemory(deltaHeapTotal)} ${formatMemory( | ||
| deltaHeapUsed | ||
| )} ${formatMemory(deltaExternal)} ${message}\n`; | ||
| } | ||
|
|
||
| module.exports = { | ||
| formatTime, | ||
| formatMemory, | ||
| formatPerfLine, | ||
| formatHeader, | ||
| }; |
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