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JSON5

JSON5

JSON5 is a data notation created in 2012 by Aseem Kishore.

The JSON5 Data Interchange Format (JSON5) is a superset of JSON that aims to alleviate some of the limitations of JSON by expanding its syntax to include some productions from ECMAScript 5.1.

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Example code from the web:

{ // comments unquoted: 'and you can quote me on that', singleQuotes: 'I can use "double quotes" here', lineBreaks: "Look, Mom! \ No \\n's!", hexadecimal: 0xdecaf, leadingDecimalPoint: .8675309, andTrailing: 8675309., positiveSign: +1, trailingComma: 'in objects', andIn: ['arrays',], "backwardsCompatible": "with JSON", }

Example code from Linguist:

/* * The following is a contrived example, but it illustrates most of the features: */ { foo: 'bar', while: true, this: 'is a \ multi-line string', // this is an inline comment here: 'is another', // inline comment /* this is a block comment that continues on another line */ hex: 0xDEADbeef, half: .5, delta: +10, to: Infinity, // and beyond! finally: 'a trailing comma', oh: [ "we shouldn't forget", 'arrays can have', 'trailing commas too', ], }

Language features

Feature Supported Example Token
MultiLine Comments
/* A comment
*/
/* */
Comments
// A comment
Line Comments
// A comment
//
Semantic Indentation ϴ

Article source

PLDB - Build the next great programming language. v5.0.0 - Acknowledgements · Email · GitHub