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destr - npm Package Compare versions

Comparing version 1.2.2 to 2.0.0

lib/index.cjs

5

dist/index.d.ts
type Options = {
strict?: boolean;
};
declare function destr(value: any, options?: Options): any;
declare function destr<T = unknown>(value: any, options?: Options): T;
declare function safeDestr<T = unknown>(value: any, options?: Options): T;
export { Options, destr as default };
export { Options, destr as default, destr, safeDestr };

45

package.json
{
"name": "destr",
"version": "1.2.2",
"version": "2.0.0",
"description": "A faster, secure and convenient alternative for JSON.parse",

@@ -12,32 +12,35 @@ "repository": "unjs/destr",

"import": "./dist/index.mjs",
"require": "./dist/index.cjs"
"require": "./lib/index.cjs"
}
},
"main": "./dist/index.cjs",
"main": "./lib/index.cjs",
"module": "./dist/index.mjs",
"types": "./dist/index.d.ts",
"files": [
"dist"
"dist",
"lib"
],
"scripts": {
"bench": "pnpm build && node ./bench.mjs",
"build": "unbuild",
"dev": "vitest dev",
"lint": "eslint --ext .ts . && prettier -c src test",
"lint:fix": "eslint --ext .ts . --fix && prettier -w src test",
"release": "pnpm test && pnpm build && changelogen --release --push && npm publish",
"test": "pnpm lint && vitest run --coverage"
},
"devDependencies": {
"@hapi/bourne": "^3.0.0",
"@vitest/coverage-c8": "^0.25.3",
"@vitest/coverage-v8": "^0.32.0",
"benchmark": "^2.1.4",
"eslint": "^8.29.0",
"eslint-config-unjs": "^0.0.2",
"secure-json-parse": "^2.6.0",
"standard-version": "^9.5.0",
"typescript": "^4.9.3",
"unbuild": "^1.0.1",
"vitest": "^0.25.3"
"changelogen": "^0.5.3",
"eslint": "^8.42.0",
"eslint-config-unjs": "^0.2.1",
"prettier": "^2.8.8",
"secure-json-parse": "^2.7.0",
"typescript": "^5.1.3",
"unbuild": "^1.2.1",
"vitest": "^0.32.0"
},
"packageManager": "pnpm@7.18.0",
"scripts": {
"bench": "pnpm build && node ./bench.cjs",
"build": "unbuild",
"dev": "vitest dev",
"lint": "eslint --ext .ts .",
"release": "pnpm test && pnpm build && standard-version && git push --follow-tags && pnpm publish",
"test": "pnpm lint && vitest run --coverage"
}
"packageManager": "pnpm@8.6.2"
}
# destr
> A faster, secure and convenient alternative for [`JSON.parse`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse):
[![npm version][npm-version-src]][npm-version-href]
[![npm downloads][npm-downloads-src]][npm-downloads-href]
[![bundle][bundle-src]][bundle-href]
[![License][license-src]][license-href]
[![npm version][npm-v-src]][npm-v-href]
[![npm downloads][npm-d-src]][npm-d-href]
[![bundle phobia][bundlephobia-src]][bundlephobia-href]
A faster, secure and convenient alternative for [`JSON.parse`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse).

@@ -13,8 +14,13 @@ ## Usage

Install using npm or yarn:
Install dependency:
```bash
# npm
npm i destr
# or
# yarn
yarn add destr
# pnpm
pnpm i destr
```

@@ -25,7 +31,7 @@

```js
// ESM
import { destr, safeDestr } from "destr";
// CommonJS
const destr = require('destr')
// ESM
import destr from 'destr'
const { destr, safeDestr } = require("destr");
```

@@ -36,62 +42,79 @@

```js
import destr from 'https://deno.land/x/destr/src/index.ts'
import { destr, safeDestr } from "https://deno.land/x/destr/src/index.ts";
console.log(destr('{ "deno": "yay" }'))
console.log(destr('{ "deno": "yay" }'));
```
## Why?
**Fast fallback to input if is not string:**
### ✅ Type Safe
```ts
const obj = JSON.parse("{}"); // obj type is any
const obj = destr("{}"); // obj type is unknown by default
const obj = destr<MyInterface>("{}"); // obj is well-typed
```
### ✅ Fast fallback to input if is not string
> 🚀 Up to 500 faster than `JSON.parse`!
```js
// Uncaught SyntaxError: Unexpected token u in JSON at position 0
JSON.parse()
JSON.parse();
// undefined
destr()
destr();
```
**Fast lookup for known string values:**
### ✅ Fast lookup for known string values
> 🚀 Up to 900 times faster than `JSON.parse`!
```js
// Uncaught SyntaxError: Unexpected token T in JSON at position 0
JSON.parse('TRUE')
JSON.parse("TRUE");
// true
destr('TRUE')
destr("TRUE");
```
**Fallback to original value if parse fails (empty or any plain string):**
### ✅ Fallback to original value if parse fails (empty or any plain string)
> 🚀 Up to 900 times faster than `JSON.parse`!
```js
// Uncaught SyntaxError: Unexpected token s in JSON at position 0
JSON.parse('salam')
JSON.parse("salam");
// "salam"
destr('salam')
destr("salam");
```
**Avoid prototype pollution:**
**Note:** This fails in safe/strict mode with `safeDestr`.
### ✅ Avoid prototype pollution
```js
const input = '{ "user": { "__proto__": { "isAdmin": true } } }'
const input = '{ "user": { "__proto__": { "isAdmin": true } } }';
// { user: { __proto__: { isAdmin: true } } }
JSON.parse(input)
JSON.parse(input);
// { user: {} }
destr(input)
destr(input);
```
### Strict Mode
### ✅ Strict Mode
If `{ strict: true }` passed as second argument, `destr` will throw an error if the input is not a valid JSON string or parsing fails. (non string values and built-ins will be still returned as-is)
When using `safeDestr` it will throw an error if the input is not a valid JSON string or parsing fails. (non string values and built-ins will be still returned as-is)
```js
// Returns "[foo"
destr('[foo')
safeDestr("[foo");
// Throws an error
destr('[foo', { strict: true })
safeDestr("[foo", { strict: true });
```

@@ -101,3 +124,3 @@

Locally try with `pnpm benchmark`. Below are esults on Node.js 18.11.0 with MBA M2.
Locally try with `pnpm benchmark`. Below are esults on Node.js **v18.16.0** with MBA M2.

@@ -108,39 +131,39 @@ **Note** `destr` is sometimes little bit slower than `JSON.parse` when parsing a valid JSON string mainly because of transform to avoid [prototype pollution](https://learn.snyk.io/lessons/prototype-pollution/javascript/) which can lead to serious security issues if not being sanitized. In the other words, `destr` is better when input is not always a json string or from untrusted source like request body.

=== Non-string fallback ==
JSON.parse x 10,323,718 ops/sec ±0.45% (96 runs sampled)
destr x 1,057,268,114 ops/sec ±1.71% (90 runs sampled)
destr (strict) x 977,215,995 ops/sec ±1.43% (97 runs sampled)
JSON.parse x 9,498,532 ops/sec ±0.57% (96 runs sampled)
destr x 153,323,211 ops/sec ±0.13% (99 runs sampled)
safeDestr x 64,237,062 ops/sec ±0.22% (96 runs sampled)
sjson:
@hapi/bourne x 10,151,985 ops/sec ±0.76% (96 runs sampled)
@hapi/bourne x 9,190,459 ops/sec ±0.50% (93 runs sampled)
Fastest is destr
=== Known values ==
JSON.parse x 16,359,358 ops/sec ±0.90% (92 runs sampled)
destr x 107,849,085 ops/sec ±0.34% (97 runs sampled)
destr (strict) x 107,891,427 ops/sec ±0.34% (99 runs sampled)
sjson x 14,216,957 ops/sec ±0.98% (89 runs sampled)
@hapi/bourne x 15,209,152 ops/sec ±1.08% (88 runs sampled)
Fastest is destr (strict),destr
JSON.parse x 14,260,909 ops/sec ±0.54% (95 runs sampled)
destr x 72,916,945 ops/sec ±0.15% (98 runs sampled)
safeDestr x 36,544,906 ops/sec ±0.31% (98 runs sampled)
sjson x 11,157,730 ops/sec ±0.53% (96 runs sampled)
@hapi/bourne x 13,241,853 ops/sec ±0.73% (93 runs sampled)
Fastest is destr
=== Plain string ==
JSON.parse (try-catch) x 211,560 ops/sec ±0.84% (92 runs sampled)
destr x 60,315,113 ops/sec ±0.46% (98 runs sampled)
destr (strict):
sjson (try-catch) x 186,492 ops/sec ±0.70% (97 runs sampled)
@hapi/bourne:
=== plain string ==
JSON.parse (try-catch) x 10,603,912 ops/sec ±0.75% (91 runs sampled)
destr x 82,123,481 ops/sec ±2.37% (99 runs sampled)
safeDestr x 40,737,935 ops/sec ±0.97% (96 runs sampled)
sjson (try-catch) x 9,194,305 ops/sec ±1.96% (94 runs sampled)
@hapi/bourne x 10,816,232 ops/sec ±1.59% (90 runs sampled)
Fastest is destr
=== standard object ==
JSON.parse x 492,180 ops/sec ±0.98% (98 runs sampled)
destr x 356,819 ops/sec ±0.40% (98 runs sampled)
destr (strict) x 412,955 ops/sec ±0.88% (94 runs sampled)
sjson x 437,376 ops/sec ±0.42% (102 runs sampled)
@hapi/bourne x 457,020 ops/sec ±0.81% (99 runs sampled)
=== package.json ==
JSON.parse x 403,428 ops/sec ±0.31% (101 runs sampled)
destr x 338,668 ops/sec ±0.27% (97 runs sampled)
safeDestr x 335,756 ops/sec ±0.29% (98 runs sampled)
sjson x 355,493 ops/sec ±0.15% (101 runs sampled)
@hapi/bourne x 384,948 ops/sec ±0.24% (98 runs sampled)
Fastest is JSON.parse
=== invalid syntax ==
JSON.parse (try-catch) x 493,739 ops/sec ±0.51% (98 runs sampled)
destr x 405,848 ops/sec ±0.56% (100 runs sampled)
destr (strict) x 409,514 ops/sec ±0.57% (101 runs sampled)
sjson (try-catch) x 435,406 ops/sec ±0.41% (100 runs sampled)
@hapi/bourne x 467,163 ops/sec ±0.42% (99 runs sampled)
=== broken object ==
JSON.parse (try-catch) x 406,262 ops/sec ±0.18% (100 runs sampled)
destr x 337,602 ops/sec ±0.37% (99 runs sampled)
safeDestr x 320,071 ops/sec ±0.35% (97 runs sampled)
sjson (try-catch) x 326,689 ops/sec ±0.41% (97 runs sampled)
@hapi/bourne x 313,024 ops/sec ±0.91% (94 runs sampled)
Fastest is JSON.parse (try-catch)

@@ -153,13 +176,11 @@ ```

<!-- Refs -->
[npm-v-src]: https://img.shields.io/npm/v/destr?style=flat-square
[npm-v-href]: https://npmjs.com/package/destr
<!-- Badges -->
[npm-d-src]: https://img.shields.io/npm/dm/destr?style=flat-square
[npm-d-href]: https://npmjs.com/package/destr
[github-actions-src]: https://img.shields.io/github/workflow/status/unjs/destr/ci/master?style=flat-square
[github-actions-href]: https://github.com/unjs/destr/actions?query=workflow%3Aci
[bundlephobia-src]: https://img.shields.io/bundlephobia/min/destr?style=flat-square
[bundlephobia-href]: https://bundlephobia.com/result?p=destr
[npm-version-src]: https://img.shields.io/npm/v/destr?style=flat&colorA=18181B&colorB=F0DB4F
[npm-version-href]: https://npmjs.com/package/destr
[npm-downloads-src]: https://img.shields.io/npm/dm/destr?style=flat&colorA=18181B&colorB=F0DB4F
[npm-downloads-href]: https://npmjs.com/package/destr
[bundle-src]: https://img.shields.io/bundlephobia/minzip/destr?style=flat&colorA=18181B&colorB=F0DB4F
[bundle-href]: https://bundlephobia.com/result?p=destr
[license-src]: https://img.shields.io/github/license/unjs/destr.svg?style=flat&colorA=18181B&colorB=F0DB4F
[license-href]: https://github.com/unjs/destr/blob/main/LICENSE

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