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https://github.com/Chris-Baker/pretty-print-object
Stringify an object/array like JSON.stringify just without all the double-quotes
https://github.com/Chris-Baker/pretty-print-object
Last synced: about 1 month ago
JSON representation
Stringify an object/array like JSON.stringify just without all the double-quotes
- Host: GitHub
- URL: https://github.com/Chris-Baker/pretty-print-object
- Owner: Chris-Baker
- License: bsd-2-clause
- Created: 2019-09-02T09:06:09.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2023-10-17T23:39:42.000Z (about 1 year ago)
- Last Synced: 2024-10-29T01:26:10.567Z (about 2 months ago)
- Language: TypeScript
- Size: 771 KB
- Stars: 5
- Watchers: 2
- Forks: 2
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-javascript - @base2/pretty-print-object - quotes (Packages)
- awesome-javascript - @base2/pretty-print-object - quotes (Packages)
README
# Pretty print object
[![License][license-image]][license-url] ![coverage-badge-green]
> Convert an object or array into a formatted string
This is a re-write of [stringify-object] in Typescript, modified to inline the dependencies and make it compatible with ES5 out of the box.
Useful for when you want to get the string representation of an object in a formatted way.
It also handles circular references and lets you specify quote type.
## Install
```
$ npm install @base2/pretty-print-object
```
## Usage
```js
import { prettyPrint } from '@base2/pretty-print-object';
const obj = {
foo: 'bar',
'arr': [1, 2, 3],
nested: {
hello: "world"
}
};
const pretty = prettyPrint(obj, {
indent: ' ',
singleQuotes: false
});
console.log(pretty);
/*
{
foo: "bar",
arr: [
1,
2,
3
],
nested: {
hello: "world"
}
}
*/
```
## API
### prettyPrint(input, [options])
Circular references will be replaced with `"[Circular]"`.
Object keys are only quoted when necessary, for example, `{'foo-bar': true}`.
#### input
Type: `Object` `Array`
#### options
Type: `Object`
##### indent
Type: `string`
Default: `\t`
Preferred indentation.
##### singleQuotes
Type: `boolean`
Default: `true`
Set to false to get double-quoted strings.
##### filter(obj, prop)
Type: `Function`
Expected to return a `boolean` of whether to include the property `prop` of the object `obj` in the output.
##### transform(obj, prop, originalResult)
Type: `Function`
Default: `undefined`
Expected to return a `string` that transforms the string that resulted from stringifying `obj[prop]`. This can be used to detect special types of objects that need to be stringified in a particular way. The `transform` function might return an alternate string in this case, otherwise returning the `originalResult`.
Here's an example that uses the `transform` option to mask fields named "password":
```js
import { prettyPrint } from '@base2/pretty-print-object';
const obj = {
user: 'becky',
password: 'secret'
};
const pretty = prettyPrint(obj, {
transform: (obj, prop, originalResult) => {
if (prop === 'password') {
return originalResult.replace(/\w/g, '*');
}
return originalResult;
}
});
console.log(pretty);
/*
{
user: 'becky',
password: '******'
}
*/
```
##### inlineCharacterLimit
Type: `number`
When set, will inline values up to `inlineCharacterLimit` length for the sake of more terse output.
For example, given the example at the top of the README:
```js
import { prettyPrint } from '@base2/pretty-print-object';
const obj = {
foo: 'bar',
'arr': [1, 2, 3],
nested: {
hello: "world"
}
};
const pretty = prettyPrint(obj, {
indent: ' ',
singleQuotes: false,
inlineCharacterLimit: 12
});
console.log(pretty);
/*
{
foo: "bar",
arr: [1, 2, 3],
nested: {
hello: "world"
}
}
*/
```
As you can see, `arr` was printed as a one-liner because its string was shorter than 12 characters.
[stringify-object]: https://www.npmjs.com/package/stringify-object
[coverage-badge-green]: https://img.shields.io/badge/Coverage-100%25-brightgreen.svg
[license-url]: https://opensource.org/licenses/BSD-2-Clause
[license-image]: https://img.shields.io/badge/License-BSD%202--Clause-orange.svg