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lossless-json

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lossless-json

Parse JSON without risk of losing numeric information

  • 4.0.0
  • Source
  • npm
  • Socket score

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146K
increased by0.31%
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What is lossless-json?

The lossless-json npm package allows for the parsing and stringifying of JSON data without losing precision for numbers. This is particularly useful for applications that require high precision in numerical data, such as financial calculations or scientific computations.

What are lossless-json's main functionalities?

Parse JSON without losing precision

This feature allows you to parse JSON strings containing large numbers without losing precision. The parsed numbers are represented as LosslessNumber objects.

{"const losslessJSON = require('lossless-json');":"","const jsonString = '{\"bigNumber\": 123456789012345678901234567890}';":"","const parsed = losslessJSON.parse(jsonString);":"","console.log(parsed.bigNumber.toString());":"// '123456789012345678901234567890'"}

Stringify JSON with high precision numbers

This feature allows you to stringify objects containing LosslessNumber instances, ensuring that the precision of large numbers is maintained in the resulting JSON string.

{"const losslessJSON = require('lossless-json');":"","const obj = { bigNumber: losslessJSON.LosslessNumber('123456789012345678901234567890') };":"","const jsonString = losslessJSON.stringify(obj);":"","console.log(jsonString);":"// '{\"bigNumber\":123456789012345678901234567890}'"}

Custom reviver and replacer functions

This feature allows you to use custom reviver and replacer functions during parsing and stringifying, providing more control over how data is processed.

{"const losslessJSON = require('lossless-json');":"","const jsonString = '{\"bigNumber\": 123456789012345678901234567890}';":"","const parsed = losslessJSON.parse(jsonString, (key, value) => {":"","  if (typeof value === 'string' && !isNaN(value)) {":"","    return losslessJSON.LosslessNumber(value);":"","  }":"","  return value;":"","});":"","console.log(parsed.bigNumber.toString());":"// '123456789012345678901234567890'"}

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Package last updated on 13 Dec 2023

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