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require-dir
Advanced tools
The require-dir npm package allows you to require all files in a directory, making it easier to manage and load multiple modules without having to require each one individually.
Basic Usage
This feature allows you to require all files in a specified directory. The returned object will have keys corresponding to the filenames and values being the required modules.
const requireDir = require('require-dir');
const modules = requireDir('./path/to/directory');
Recursive Loading
This feature allows you to recursively require all files in a directory and its subdirectories. The returned object will have nested objects corresponding to the directory structure.
const requireDir = require('require-dir');
const modules = requireDir('./path/to/directory', { recurse: true });
Filtering Files
This feature allows you to filter which files to require based on a custom filter function. In this example, only files ending with '.js' will be required.
const requireDir = require('require-dir');
const modules = requireDir('./path/to/directory', { filter: (filename) => filename.endsWith('.js') });
The glob package allows you to use wildcard patterns to find files and directories. It is more flexible in terms of pattern matching but does not directly require the files like require-dir.
The readdirp package provides recursive file and directory listing with filtering options. It is more focused on file system traversal and does not directly require the files.
The require-all package is very similar to require-dir, allowing you to require all files in a directory. It offers additional options like filtering and mapping filenames to module names.
Node helper to require()
directories. The directory's files are examined,
and each one that can be require()
'd is require()
'd and returned as part
of a hash from that file's basename to its exported contents.
Given this directory structure:
dir
+ a.js
+ b.json
+ c.coffee
+ d.txt
requireDir('./dir')
will return the equivalent of:
{
a: require('./dir/a.js'),
b: require('./dir/b.json')
}
If CoffeeScript is registered via require('coffee-script/register')
,
c.coffee
will also be returned. Any extension registered with node will work the same way without any additional configuration.
npm install require-dir
Note that this package is not requireDir
— turns out that's already
taken! ;)
Basic usage that examines only directories' immediate files:
var requireDir = require('require-dir');
var dir = requireDir('./path/to/dir');
You can optionally customize the behavior by passing an extra options object:
var dir = requireDir('./path/to/dir', { recurse: true });
recurse
: Whether to recursively require()
subdirectories too.
(node_modules
within subdirectories will be ignored.)
Default is false.
filter
: Apply a filter on the filename before require-ing. For example, ignoring files prefixed with dev
in a production environment:
requireDir('./dir', {
filter: function (fullPath) {
return process.env.NODE_ENV !== 'production' && !fullPath.match(/$dev/);
}
})
mapKey
: Apply a transform to the module base name after require-ing. For example, uppercasing any module names:
requireDir('./dir', {
mapKey: function (value, baseName) {
return baseName.toUpperCase();
}
})
mapValue
: Apply a transform to the value after require-ing. For example, uppercasing any text exported:
requireDir('./dir', {
mapValue: function (value, baseName) {
return typeof value === 'string' ? value.toUpperCase() : value;
}
})
duplicates
: By default, if multiple files share the same basename, only the
highest priority one is require()
'd and returned. (Priority is determined by
the order of require.extensions
keys, with directories taking precedence
over files if recurse
is true.) Specifying this option require()
's all
files and returns full filename keys in addition to basename keys.
Default is false.
In the example above, if there were also an a.json
, the behavior would
be the same by default, but specifying duplicates: true
would yield:
{
a: require('./dir/a.js'),
'a.js': require('./dir/a.js'),
'a.json': require('./dir/a.json'),
b: require('./dir/b.json'),
'b.json': require('./dir/b.json')
}
noCache
: Prevent file caching. Could be useful using gulp.watch or other watch requiring refreshed file content Default is false.
requireDir('./dir', { noCache: true })
Make an index.js
in a directory with this code to clean things up:
module.exports = require('require-dir')(); // defaults to '.'
And don't worry, the calling file is always ignored to prevent infinite loops.
FAQs
Helper to require() directories.
The npm package require-dir receives a total of 197,850 weekly downloads. As such, require-dir popularity was classified as popular.
We found that require-dir demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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