https://github.com/weisjohn/jsonload

read in a json file (supports line-delimited files)
https://github.com/weisjohn/jsonload

Last synced: about 2 months ago
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read in a json file (supports line-delimited files)

• Host: GitHub
• URL: https://github.com/weisjohn/jsonload
• Owner: weisjohn
• License: mit
• Created: 2015-07-16T20:19:22.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-11-19T10:13:56.000Z (about 9 years ago)
• Last Synced: 2024-11-14T09:32:55.333Z (2 months ago)
• Language: JavaScript
• Homepage:
• Size: 10.7 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# jsonload

read in a json file, handles line-delimited

### usage

```javascript

var jsonload = require('jsonload');

// async

jsonload('./foo', function(err, results) {

    console.log(results);

});

// sync

var foo = jsonload.sync('./foo');

```

### errors

Because `jsonload` handles simple and line-delimited JSON files, there are a three possible errors that may be returned/thrown:

 - file not found

 - an invalid JSON file

 - an invalid JSON line(s)

```javascript

// async

jsonload('./foo', function(err, results) {

    if (err.code == 'ENOENT')

        console.log('file not found');

    if (err.name == 'SyntaxError')

        console.log('invalid JSON file');

    if (err.length)

        console.log('invalid JSON lines', e);

    // on complex files, there may be lines which parsed correctly

    console.log(results);

});

// sync

try {

    var foo = jsonload.sync('./foo');

} catch (err) {

    if (err.code == 'ENOENT')

        console.log('file not found');

    if (err.name == 'SyntaxError')

        console.log('invalid JSON file');

    if (err.length)

        console.log('invalid JSON lines', e);

}

```

### parser

By default, `jsonload` utilizes the built-in [`JSON`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON) parser. You can optionally specify a different parser. It must be an object with a `.parse()` function:

```javascript

var EJSON = require('mongodb-extended-json');

var sync = jsonload.sync('./ejson-file', EJSON);

jsonload('./ejson-file', EJSON, function(err, ejson) {

    console.log(ejson[0]);

});

```

The parser is invoked line-by-line. To log each line before parsing (tap-style):

```javascript

jsonload('./json-file', { parse: function(obj) {

    console.log(obj);

    return JSON.parse(obj);

} }, function() {});

```