mirror of
https://github.com/fooflington/selfdefined.git
synced 2025-06-12 13:41:40 +00:00
update
This commit is contained in:
tatianamac
280
node_modules/depd/Readme.md
generated
vendored
Normal file
280
node_modules/depd/Readme.md
generated
vendored
Normal file
@ -0,0 +1,280 @@
|
||||
# depd
|
||||
|
||||
[![NPM Version][npm-version-image]][npm-url]
|
||||
[![NPM Downloads][npm-downloads-image]][npm-url]
|
||||
[![Node.js Version][node-image]][node-url]
|
||||
[![Linux Build][travis-image]][travis-url]
|
||||
[![Windows Build][appveyor-image]][appveyor-url]
|
||||
[![Coverage Status][coveralls-image]][coveralls-url]
|
||||
|
||||
Deprecate all the things
|
||||
|
||||
> With great modules comes great responsibility; mark things deprecated!
|
||||
|
||||
## Install
|
||||
|
||||
This module is installed directly using `npm`:
|
||||
|
||||
```sh
|
||||
$ npm install depd
|
||||
```
|
||||
|
||||
This module can also be bundled with systems like
|
||||
[Browserify](http://browserify.org/) or [webpack](https://webpack.github.io/),
|
||||
though by default this module will alter it's API to no longer display or
|
||||
track deprecations.
|
||||
|
||||
## API
|
||||
|
||||
<!-- eslint-disable no-unused-vars -->
|
||||
|
||||
```js
|
||||
var deprecate = require('depd')('my-module')
|
||||
```
|
||||
|
||||
This library allows you to display deprecation messages to your users.
|
||||
This library goes above and beyond with deprecation warnings by
|
||||
introspection of the call stack (but only the bits that it is interested
|
||||
in).
|
||||
|
||||
Instead of just warning on the first invocation of a deprecated
|
||||
function and never again, this module will warn on the first invocation
|
||||
of a deprecated function per unique call site, making it ideal to alert
|
||||
users of all deprecated uses across the code base, rather than just
|
||||
whatever happens to execute first.
|
||||
|
||||
The deprecation warnings from this module also include the file and line
|
||||
information for the call into the module that the deprecated function was
|
||||
in.
|
||||
|
||||
**NOTE** this library has a similar interface to the `debug` module, and
|
||||
this module uses the calling file to get the boundary for the call stacks,
|
||||
so you should always create a new `deprecate` object in each file and not
|
||||
within some central file.
|
||||
|
||||
### depd(namespace)
|
||||
|
||||
Create a new deprecate function that uses the given namespace name in the
|
||||
messages and will display the call site prior to the stack entering the
|
||||
file this function was called from. It is highly suggested you use the
|
||||
name of your module as the namespace.
|
||||
|
||||
### deprecate(message)
|
||||
|
||||
Call this function from deprecated code to display a deprecation message.
|
||||
This message will appear once per unique caller site. Caller site is the
|
||||
first call site in the stack in a different file from the caller of this
|
||||
function.
|
||||
|
||||
If the message is omitted, a message is generated for you based on the site
|
||||
of the `deprecate()` call and will display the name of the function called,
|
||||
similar to the name displayed in a stack trace.
|
||||
|
||||
### deprecate.function(fn, message)
|
||||
|
||||
Call this function to wrap a given function in a deprecation message on any
|
||||
call to the function. An optional message can be supplied to provide a custom
|
||||
message.
|
||||
|
||||
### deprecate.property(obj, prop, message)
|
||||
|
||||
Call this function to wrap a given property on object in a deprecation message
|
||||
on any accessing or setting of the property. An optional message can be supplied
|
||||
to provide a custom message.
|
||||
|
||||
The method must be called on the object where the property belongs (not
|
||||
inherited from the prototype).
|
||||
|
||||
If the property is a data descriptor, it will be converted to an accessor
|
||||
descriptor in order to display the deprecation message.
|
||||
|
||||
### process.on('deprecation', fn)
|
||||
|
||||
This module will allow easy capturing of deprecation errors by emitting the
|
||||
errors as the type "deprecation" on the global `process`. If there are no
|
||||
listeners for this type, the errors are written to STDERR as normal, but if
|
||||
there are any listeners, nothing will be written to STDERR and instead only
|
||||
emitted. From there, you can write the errors in a different format or to a
|
||||
logging source.
|
||||
|
||||
The error represents the deprecation and is emitted only once with the same
|
||||
rules as writing to STDERR. The error has the following properties:
|
||||
|
||||
- `message` - This is the message given by the library
|
||||
- `name` - This is always `'DeprecationError'`
|
||||
- `namespace` - This is the namespace the deprecation came from
|
||||
- `stack` - This is the stack of the call to the deprecated thing
|
||||
|
||||
Example `error.stack` output:
|
||||
|
||||
```
|
||||
DeprecationError: my-cool-module deprecated oldfunction
|
||||
at Object.<anonymous> ([eval]-wrapper:6:22)
|
||||
at Module._compile (module.js:456:26)
|
||||
at evalScript (node.js:532:25)
|
||||
at startup (node.js:80:7)
|
||||
at node.js:902:3
|
||||
```
|
||||
|
||||
### process.env.NO_DEPRECATION
|
||||
|
||||
As a user of modules that are deprecated, the environment variable `NO_DEPRECATION`
|
||||
is provided as a quick solution to silencing deprecation warnings from being
|
||||
output. The format of this is similar to that of `DEBUG`:
|
||||
|
||||
```sh
|
||||
$ NO_DEPRECATION=my-module,othermod node app.js
|
||||
```
|
||||
|
||||
This will suppress deprecations from being output for "my-module" and "othermod".
|
||||
The value is a list of comma-separated namespaces. To suppress every warning
|
||||
across all namespaces, use the value `*` for a namespace.
|
||||
|
||||
Providing the argument `--no-deprecation` to the `node` executable will suppress
|
||||
all deprecations (only available in Node.js 0.8 or higher).
|
||||
|
||||
**NOTE** This will not suppress the deperecations given to any "deprecation"
|
||||
event listeners, just the output to STDERR.
|
||||
|
||||
### process.env.TRACE_DEPRECATION
|
||||
|
||||
As a user of modules that are deprecated, the environment variable `TRACE_DEPRECATION`
|
||||
is provided as a solution to getting more detailed location information in deprecation
|
||||
warnings by including the entire stack trace. The format of this is the same as
|
||||
`NO_DEPRECATION`:
|
||||
|
||||
```sh
|
||||
$ TRACE_DEPRECATION=my-module,othermod node app.js
|
||||
```
|
||||
|
||||
This will include stack traces for deprecations being output for "my-module" and
|
||||
"othermod". The value is a list of comma-separated namespaces. To trace every
|
||||
warning across all namespaces, use the value `*` for a namespace.
|
||||
|
||||
Providing the argument `--trace-deprecation` to the `node` executable will trace
|
||||
all deprecations (only available in Node.js 0.8 or higher).
|
||||
|
||||
**NOTE** This will not trace the deperecations silenced by `NO_DEPRECATION`.
|
||||
|
||||
## Display
|
||||
|
||||
|
||||
|
||||
When a user calls a function in your library that you mark deprecated, they
|
||||
will see the following written to STDERR (in the given colors, similar colors
|
||||
and layout to the `debug` module):
|
||||
|
||||
```
|
||||
bright cyan bright yellow
|
||||
| | reset cyan
|
||||
| | | |
|
||||
▼ ▼ ▼ ▼
|
||||
my-cool-module deprecated oldfunction [eval]-wrapper:6:22
|
||||
▲ ▲ ▲ ▲
|
||||
| | | |
|
||||
namespace | | location of mycoolmod.oldfunction() call
|
||||
| deprecation message
|
||||
the word "deprecated"
|
||||
```
|
||||
|
||||
If the user redirects their STDERR to a file or somewhere that does not support
|
||||
colors, they see (similar layout to the `debug` module):
|
||||
|
||||
```
|
||||
Sun, 15 Jun 2014 05:21:37 GMT my-cool-module deprecated oldfunction at [eval]-wrapper:6:22
|
||||
▲ ▲ ▲ ▲ ▲
|
||||
| | | | |
|
||||
timestamp of message namespace | | location of mycoolmod.oldfunction() call
|
||||
| deprecation message
|
||||
the word "deprecated"
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
### Deprecating all calls to a function
|
||||
|
||||
This will display a deprecated message about "oldfunction" being deprecated
|
||||
from "my-module" on STDERR.
|
||||
|
||||
```js
|
||||
var deprecate = require('depd')('my-cool-module')
|
||||
|
||||
// message automatically derived from function name
|
||||
// Object.oldfunction
|
||||
exports.oldfunction = deprecate.function(function oldfunction () {
|
||||
// all calls to function are deprecated
|
||||
})
|
||||
|
||||
// specific message
|
||||
exports.oldfunction = deprecate.function(function () {
|
||||
// all calls to function are deprecated
|
||||
}, 'oldfunction')
|
||||
```
|
||||
|
||||
### Conditionally deprecating a function call
|
||||
|
||||
This will display a deprecated message about "weirdfunction" being deprecated
|
||||
from "my-module" on STDERR when called with less than 2 arguments.
|
||||
|
||||
```js
|
||||
var deprecate = require('depd')('my-cool-module')
|
||||
|
||||
exports.weirdfunction = function () {
|
||||
if (arguments.length < 2) {
|
||||
// calls with 0 or 1 args are deprecated
|
||||
deprecate('weirdfunction args < 2')
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
When calling `deprecate` as a function, the warning is counted per call site
|
||||
within your own module, so you can display different deprecations depending
|
||||
on different situations and the users will still get all the warnings:
|
||||
|
||||
```js
|
||||
var deprecate = require('depd')('my-cool-module')
|
||||
|
||||
exports.weirdfunction = function () {
|
||||
if (arguments.length < 2) {
|
||||
// calls with 0 or 1 args are deprecated
|
||||
deprecate('weirdfunction args < 2')
|
||||
} else if (typeof arguments[0] !== 'string') {
|
||||
// calls with non-string first argument are deprecated
|
||||
deprecate('weirdfunction non-string first arg')
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Deprecating property access
|
||||
|
||||
This will display a deprecated message about "oldprop" being deprecated
|
||||
from "my-module" on STDERR when accessed. A deprecation will be displayed
|
||||
when setting the value and when getting the value.
|
||||
|
||||
```js
|
||||
var deprecate = require('depd')('my-cool-module')
|
||||
|
||||
exports.oldprop = 'something'
|
||||
|
||||
// message automatically derives from property name
|
||||
deprecate.property(exports, 'oldprop')
|
||||
|
||||
// explicit message
|
||||
deprecate.property(exports, 'oldprop', 'oldprop >= 0.10')
|
||||
```
|
||||
|
||||
## License
|
||||
|
||||
[MIT](LICENSE)
|
||||
|
||||
[npm-version-image]: https://img.shields.io/npm/v/depd.svg
|
||||
[npm-downloads-image]: https://img.shields.io/npm/dm/depd.svg
|
||||
[npm-url]: https://npmjs.org/package/depd
|
||||
[travis-image]: https://img.shields.io/travis/dougwilson/nodejs-depd/master.svg?label=linux
|
||||
[travis-url]: https://travis-ci.org/dougwilson/nodejs-depd
|
||||
[appveyor-image]: https://img.shields.io/appveyor/ci/dougwilson/nodejs-depd/master.svg?label=windows
|
||||
[appveyor-url]: https://ci.appveyor.com/project/dougwilson/nodejs-depd
|
||||
[coveralls-image]: https://img.shields.io/coveralls/dougwilson/nodejs-depd/master.svg
|
||||
[coveralls-url]: https://coveralls.io/r/dougwilson/nodejs-depd?branch=master
|
||||
[node-image]: https://img.shields.io/node/v/depd.svg
|
||||
[node-url]: https://nodejs.org/en/download/
|
||||
Reference in New Issue
Block a user