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jsonjoy-com/json-pointer
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Fast implementation ofJSON Pointer (RFC 6901)specification in TypeScript.
Can find a value in a JSON object using three methods: (1) JSON Pointer string,(2) array of steps, or (3) a pre-compiled function.
Find the value in a JSON document at some specific location.
import{findByPointer}from'@jsonjoy.com/json-pointer';constdoc={foo:{bar:123,},};constres=findByPointer(doc,'/foo/bar');
Alternatively, you can specify an array of steps, such as['foo', 'bar']. Or,use theparseJsonPointer function to convert a JSON Pointer string to an array.
import{find,parseJsonPointer}from'@jsonjoy.com/json-pointer';constdoc={foo:{bar:123,},};constpath=parseJsonPointer('/foo/bar');constref=find(doc,path);console.log(ref);// { val: 123, obj: { bar: 123 }, key: 'bar'}
If you know the path in advance, you can compile a function that will find thevalue at that location, it will work few times faster than the previous methods.
import{$$find}from'@jsonjoy.com/json-pointer/lib/codegen';constdoc={foo:{bar:123,},};constfinder=$$find(['foo','bar']);constres=finder(doc);
Convert JSON Pointer to path array and back.
import{parseJsonPointer}from'@jsonjoy.com/json-pointer';console.log(parseJsonPointer('/f~0o~1o/bar/1/baz'));// [ 'f~o/o', 'bar', '1', 'baz' ]console.log(formatJsonPointer(['f~o/o','bar','1','baz']));// /f~0o~1o/bar/1/baz
Decode and encode a single step of JSON Pointer.
console.log(unescapeComponent('~0~1'));// ~/console.log(escapeComponent('~/'));// ~0~1
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Fast JSON Pointer implementation in JavaScript
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