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mirror of https://github.com/nodejs/node.git synced 2024-12-01 16:10:02 +01:00
nodejs/tools/doc
Jeremiah Senkpiel cbd8d715b2 fs: introduce opendir() and fs.Dir
This adds long-requested methods for asynchronously interacting and
iterating through directory entries by using `uv_fs_opendir`,
`uv_fs_readdir`, and `uv_fs_closedir`.

`fs.opendir()` and friends return an `fs.Dir`, which contains methods
for doing reads and cleanup. `fs.Dir` also has the async iterator
symbol exposed.

The `read()` method and friends only return `fs.Dirent`s for this API.
Having a entry type or doing a `stat` call is deemed to be necessary in
the majority of cases, so just returning dirents seems like the logical
choice for a new api.

Reading when there are no more entries returns `null` instead of a
dirent. However the async iterator hides that (and does automatic
cleanup).

The code lives in separate files from the rest of fs, this is done
partially to prevent over-pollution of those (already very large)
files, but also in the case of js allows loading into `fsPromises`.

Due to async_hooks, this introduces a new handle type of `DIRHANDLE`.

This PR does not attempt to make complete optimization of
this feature. Notable future improvements include:
- Moving promise work into C++ land like FileHandle.
- Possibly adding `readv()` to do multi-entry directory reads.
- Aliasing `fs.readdir` to `fs.scandir` and doing a deprecation.

Refs: https://github.com/nodejs/node-v0.x-archive/issues/388
Refs: https://github.com/nodejs/node/issues/583
Refs: https://github.com/libuv/libuv/pull/2057

PR-URL: https://github.com/nodejs/node/pull/29349
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: David Carlier <devnexen@gmail.com>
2019-10-08 10:34:48 -07:00
..
addon-verify.js tools: refactor tools JS code 2019-03-04 11:06:23 -08:00
allhtml.js
alljson.js
apilinks.js tools: switch to camelcasing in apilinks.js 2019-05-09 21:41:03 -07:00
common.js tools: fix doc tool behavior for version arrays 2018-09-12 11:47:08 +02:00
generate.js tools: refactor tools JS code 2019-03-04 11:06:23 -08:00
html.js doc,tools: get altDocs versions from CHANGELOG.md 2019-06-01 10:17:30 +02:00
json.js tools: produce JSON documentation using unified/remark/rehype 2018-07-25 21:33:06 +03:00
LICENSE
package-lock.json tools: update dependencies in tools/doc 2019-05-27 13:35:22 -07:00
package.json tools: update dependencies in tools/doc 2019-05-27 13:35:22 -07:00
README.md doc: prepare markdown files for more stringent blank-line linting 2019-09-07 07:07:25 -07:00
type-parser.js fs: introduce opendir() and fs.Dir 2019-10-08 10:34:48 -07:00
versions.js doc,tools: get altDocs versions from CHANGELOG.md 2019-06-01 10:17:30 +02:00

Here's how the node docs work.

1:1 relationship from lib/<module>.js to doc/api/<module>.md.

Each type of heading has a description block.

# module

<!--introduced_in=v0.10.0-->

> Stability: 2 - Stable

A description and examples.

## module.property
<!-- YAML
added: v0.10.0
-->

* {type}

A description of the property.

## module.someFunction(x, y, [z=100])
<!-- YAML
added: v0.10.0
-->

* `x` {string} The description of the string.
* `y` {boolean} Should I stay or should I go?
* `z` {number} How many zebras to bring. **Default:** `100`.

A description of the function.

## module.someNewFunction(x)
<!-- YAML
added: REPLACEME
-->

* `x` {string} The description of the string.

This feature is not in a release yet.

## Event: 'blerg'
<!-- YAML
added: v0.10.0
-->

* `anArg` {type} A description of the listener argument.

Modules don't usually raise events on themselves. `cluster` is the
only exception.

## Class: SomeClass
<!-- YAML
added: v0.10.0
-->

A description of the class.

### SomeClass.classMethod(anArg)
<!-- YAML
added: v0.10.0
-->

* `anArg` {Object} Just an argument.
  * `field` {string} `anArg` can have this field.
  * `field2` {boolean} Another field. **Default:** `false`.
* Returns: {boolean} `true` if it worked.

A description of the method for humans.

### SomeClass.nextSibling()
<!-- YAML
added: v0.10.0
-->

* Returns: {SomeClass | null} The next `SomeClass` in line.

`SomeClass` must be registered in `tools/doc/type-parser.js`
to be properly parsed in `{type}` fields.

### SomeClass.someProperty
<!-- YAML
added: v0.10.0
-->

* {string}

The indication of what `someProperty` is.

### Event: 'grelb'
<!-- YAML
added: v0.10.0
-->

* `isBlerg` {boolean}

This event is emitted on instances of `SomeClass`, not on the module itself.
  • Classes have (description, Properties, Methods, Events).
  • Events have (list of listener arguments, description).
  • Functions have (list of arguments, returned value if defined, description).
  • Methods have (list of arguments, returned value if defined, description).
  • Modules have (description, Properties, Functions, Classes, Examples).
  • Properties have (type, description).