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@crikey/json-pointer

v0.0.2

Published

Functions for handling JSON pointers [rfc6901](https://www.rfc-editor.org/rfc/rfc6901.html) and [relative-json-pointer](https://datatracker.ietf.org/doc/html/draft-luff-relative-json-pointer-00)

Downloads

4

Readme

@crikey/json-pointer

Functions for handling JSON pointers rfc6901 and relative-json-pointer

See @crikey/json-pointer for full documentation.

API

Types

Contains types used to represent JSON pointers and segments

Guards

Contains typescript guards for identifying type information.

  • is_pointer Returns true if value is a Pointer
  • is_absolute Returns true if value is an AbsolutePointer
  • is_relative Returns true if value is a RelativePointer
  • is_relative_pure Returns true if value is a RelativeOnlyPointer or RelativePurePointer
  • is_relative_iref Returns true if value is a RelativeIRefPointer
  • is_relative_only Returns true if value is a RelativeOnlyPointer

Error classes

Classes used when throwing errors

  • pointer-decoding-error Error class thrown for pointer decoding errors
  • pointer-encoding-error Error class thrown for pointer encoding errors

Creation

Functions used for creating paths from their constituent parts

  • pointer Create a Pointer from an optional relative number and a series of decoded segments

  • absolute Create an AbsolutePointer from a series of decoded segments

  • relative Create a RelativePointer from a relative number and a series of decoded segments

  • relative_iref Create a RelativeIRefPointer from a relative number

  • pointer_encoded Create a Pointer from an optional relative number and a series of encoded segments

  • absolute_encoded Create an AbsolutePointer from a series of encoded segments

  • relative_encoded Create a RelativePointer from a relative number and a series of encoded segments

Joining

Combining pointer components and segments

  • join_pointer Join two Pointers together

  • join_segments Append decoded segments onto an existing Pointer

  • join_iref Append an index reference onto a RelativeOnlyPointer

  • join_encoded_segments Append encoded segments onto an existing Pointer

Encoding

Encode and decode path segments

  • segment_encode Encode a given string segment
  • segment_decode Decode a given string segment

Splitting

Split paths into their constituent components/segments

  • split Split a Pointer into its constituent parts, decoding each segment

  • split_pure Split a PurePointer into its constituent parts, decoding each segment

  • split_absolute Split a AbsolutePointer into its constituent parts, decoding each segment

  • split_relative Split a RelativePointer into its constituent parts, decoding each segment

  • split_relative_pure Split a RelativePurePointer into its constituent parts, decoding each segment

  • split_relative_iref Split a RelativeIRefPointer into its constituent parts, decoding each segment

  • split_encoded Split a Pointer into its constituent parts, leaving segments encoded

  • split_encoded_pure Split a PurePointer into its constituent parts, leaving segments encoded

  • split_encoded_absolute Split a AbsolutePointer into its constituent parts, leaving segments encoded

  • split_encoded_relative Split a RelativePointer into its constituent parts, leaving segments encoded

  • split_encoded_relative_pure Split a RelativePurePointer into its constituent parts, leaving segments encoded

  • split_encoded_relative_iref Split a RelativeIRefPointer into its constituent parts, leaving segments encoded

Installation

# pnpm
$ pnpm add @crikey/json-pointer

# npm
$ npm add @crikey/json-pointer

# yarn
$ yarn add @crikey/json-pointer

Example Usage

Guards

console.log(is_pointer('xyz')); // false
console.log(is_pointer('/xyz')); // true
console.log(is_pointer('123/xyz')); // true
console.log(is_absolute('123/xyz')); // false
console.log(is_relative('123/xyz')); // true

Creating

console.log(pointer('x','y','z')); // '/x/y/z'
console.log(pointer('~/')); // '/~0~1'
console.log(pointer(undefined,'x','y','z')); // '/x/y/z'
console.log(pointer(123,'x','y','z')); // '123/x/y/z'
console.log(relative(123,'x','y','z')); // '123/x/y/z'

Joining

console.log(join_pointer('/a/b/c', '/x/y/z')); // '/x/y/z'
console.log(join_pointer('/a/b/c', '1/x/y/z')); // '/a/b/x/y/z'
console.log(join_segments('/a/b/c', 'x', 'y', 'z')); // '/a/b/c/x/y/z'
console.log(join_segments('/a/b/c', '~')); // '/a/b/c/~0'

Splitting

console.log(split('/a/b/c')); // { segments: ['a', 'b', 'c'] }
console.log(split('123/a/b/c')); // { relative: 123, segments: ['a', 'b', 'c'] }
console.log(split('123#')); // { relative: 123, iref: true }