path-parser

path-parser

A small library to parse and build paths. It can be used to partially or fully test paths against a defined pattern.

Partial testing allows to determine if a given path starts with the defined pattern. It is used by route-node

import { Path } from 'path-parser'
// or
const { Path } = require('path-parser')

const path = new Path('/users/:id')

// Matching
path.test('/users/00123')
// {
//  id: "00123"
// }

// Partial testing: does the provided path
// starts with the defined pattern?
path.partialTest('/users/00123/orders')
// {
//  id: "00123"
// }
path.partialTest('/profile/00123/orders')
// null

// Building
path.build({ id: '00123' })
// => "/users/00123"

Without new:

const path = Path.createPath('/users/:id')

Defining parameters

• :param: for URL parameters
• ;param: for matrix parameters
• *splat: for parameters spanning over multiple segments. Handle with care
• ?param1&param2 or ?:param1&:param2: for query parameters. Colons : are optional.

Parameter constraints

For URL parameters and matrix parameters, you can add a constraint in the form of a regular expression. Note that back slashes have to be escaped.

• :param<\\d+> will match numbers only for parameter param
• ;id<[a-fA-F0-9]{8} will match 8 characters hexadecimal strings for parameter id

Constraints are also applied when building paths, unless specified otherwise (set option flag ignoreConstraints to true).

// Path.build(params, opts)
var Path = new Path('/users/:id<d+>')

path.build({ id: 'not-a-number' }) // => Will throw an error
path.build({ id: '123' }) // => '/users/123'

API

path.test(path: string, opts?: object): object | null;

Test if the provided path matches the defined path template. Options available are:

• 'caseSensitive': whether matching should be case sensitive or not (default to false)
• 'strictTrailingSlash': whether or not it should strictly match trailing slashes (default to false)
• 'queryParams': options for query parameters

path.partialTest(path: string, opts?: object): object | null;

Test if the provided path is partially matched (starts with) the defined path template. Options available are:

• 'caseSensitive': whether matching should be case sensitive or not (default to false)
• 'delimited': whether or not a partial match should only be successful if it reaches a delimiter (/, ?, . and ;). Default to true.
• 'queryParams': options for query parameters

path.build(params?: object, opts?: object): string;

Builds the defined path template with the provided parameters

• 'ignoreConstraints': whether or not to ignore parameter constraints (default to false)
• 'ignoreSearch': whether or not to build query parameters (default to false)
• 'caseSensitive': whether matching should be case sensitive or not (default to false)
• 'queryParams': options for query parameters

Related modules

• route-parser
• url-pattern

Changelog

5.1.0 (2019-12-30)

Features

• add generic type to Path (#45) (33eaed2)
• Update search-params to latest version

Bug Fixes

• Fix missing dependency tslib