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suggestion for getSystemErrorMap() implementation #38101

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suggestion for getSystemErrorMap() impl
eladkishon Apr 5, 2021
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lint
eladkishon Apr 5, 2021
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avoid unneeded call indirection
eladkishon Apr 6, 2021
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syntax sugar and minor changes
eladkishon Apr 7, 2021
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add basic uv-errmap test
eladkishon Apr 9, 2021
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add API doc
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add back example of getSystemErrorName
eladkishon Apr 9, 2021
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Fix typo in util.md doc
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add API doc
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eladkishon committed Apr 9, 2021
commit 87fb10e82c1f66a343817a519a23364f9cacadb2
16 changes: 15 additions & 1 deletion doc/api/util.md
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Expand Up @@ -369,9 +369,23 @@ Returns the string name for a numeric error code that comes from a Node.js API.
The mapping between error codes and error names is platform-dependent.
See [Common System Errors][] for the names of common errors.

## `util.getSystemErrorMap()`
<!-- YAML
added: v9.7.0
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-->

* Returns: {Map}

Returns a Map of all system error codes available from Node.js API.
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The mapping between error codes and error names is platform-dependent.
See [Common System Errors][] for the names of common errors.



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```js
fs.access('file/that/does/not/exist', (err) => {
const name = util.getSystemErrorName(err.errno);
const errorMap = util.getSystemErrorMap();
const name = errorMap.get(err.errno);
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console.error(name); // ENOENT
});
```
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