is-resolvable
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Package description
The is-resolvable npm package is a utility that checks if a module ID (a string) can be resolved to a valid module using Node.js' resolution algorithm. This can be useful for determining if a module is available for use without actually requiring it.
Check if a module is resolvable
This feature allows you to check if a given module ID can be resolved to a valid module. It returns true if the module can be resolved and false otherwise.
const isResolvable = require('is-resolvable');
console.log(isResolvable('express')); // true if 'express' is installed
console.log(isResolvable('./local-module')); // true if './local-module' existsThe resolve package provides a synchronous and asynchronous method to resolve a module path as Node.js does. It offers more detailed control over the resolution process compared to is-resolvable, including custom module directories and file extensions.
The require-resolve package is similar to is-resolvable but also provides the full path to the resolved module. It can be used to check if a module is resolvable and to get the path to the module if it is.
The module-exists package checks if a module exists and can be required. It is similar to is-resolvable but focuses on the existence check rather than the resolution process.
Readme
A Node.js module to check if a given module ID is resolvable with require()
const isResolvable = require('is-resolvable');
isResolvable('fs'); //=> true
isResolvable('path'); //=> true
// When ./index.js exists
isResolvable('./index.js') //=> true
isResolvable('./index') //=> true
isResolvable('.') //=> true
npm install is-resolvable
const isResolvable = require('is-resolvable');
moduleId: string (module ID)
options: Object (require.resolve options)
Return: boolean
It returns true if require() can load a file form a given module ID, otherwise false.
const isResolvable = require('is-resolvable');
// When ./foo.json exists
isResolvable('./foo.json'); //=> true
isResolvable('./foo'); //=> true
isResolvable('./foo.js'); //=> false
// When `eslint` module is installed but `jshint` isn't
isResolvable('eslint'); //=> true
isResolvable('jshint'); //=> false
// When `lodash` module is installed
isResolvable('lodash/isObject'); //=> true
isResolvable('lodash/fp/reject.js'); //=> true
The second argument accepts an options object for require.resolve().
// When ./bar/baz.js exists
isResolvable('./baz.js'); //=> false
isResolvable('./baz.js', {paths: ['bar']}); //=> true
ISC License © 2018 Shinnosuke Watanabe
FAQs
Check if a module ID is resolvable with require()
The npm package is-resolvable receives a total of 2,592,074 weekly downloads. As such, is-resolvable popularity was classified as popular.
We found that is-resolvable demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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