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json-bigint

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json-bigint

JSON.parse with bigints support


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decreased by-3.64%
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What is json-bigint?

The json-bigint npm package is designed to handle JSON data that includes very large numbers, which can exceed JavaScript's Number.MAX_SAFE_INTEGER. It provides functionality to parse and stringify JSON while preserving the precision of large integers.

What are json-bigint's main functionalities?

Parsing JSON with BigInt

This feature allows you to parse JSON strings that contain very large numbers. The parsed numbers are represented as BigInt objects, preserving their precision.

const JSONbig = require('json-bigint');
const jsonString = '{"bigNumber": 9223372036854775807}';
const parsed = JSONbig.parse(jsonString);
console.log(parsed.bigNumber.toString()); // '9223372036854775807'

Stringifying JSON with BigInt

This feature allows you to stringify JavaScript objects that contain BigInt values. The BigInt values are converted to strings in the resulting JSON string to maintain their precision.

const JSONbig = require('json-bigint');
const obj = { bigNumber: BigInt('9223372036854775807') };
const jsonString = JSONbig.stringify(obj);
console.log(jsonString); // '{"bigNumber":"9223372036854775807"}'

Customizing BigInt handling

This feature allows you to customize how BigInt values are handled. For example, you can configure json-bigint to store large numbers as strings instead of BigInt objects.

const JSONbig = require('json-bigint')({ storeAsString: true });
const jsonString = '{"bigNumber": 9223372036854775807}';
const parsed = JSONbig.parse(jsonString);
console.log(parsed.bigNumber); // '9223372036854775807' (as a string)

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Package last updated on 14 Jul 2020

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