json-string-locator

 

Locate object or property position in a json string, mainly used in monaco editor, e.g. monaco.languages.registerCodeLensProvider

Install

``bash
npm i json-string-locator
`

Usage

`js
import { parse, locateObject, locateProperty } from 'json-string-locator'

const ast = parse(
{
"type": "foo",
"elements": {
"type": "bar",
"hello": "world"
}
}
)
locateObject( ast, ( object, path ) => node.type === 'bar' )
/*
[
{
start: { line: 4, column: 17, offset: 40 },
end: { line: 7, column: 6, offset: 91 },
path: ...
}
]
*/

locateProperty( ast, ( property, path ) => property.type === 'bar' )
/*
[
{
start: { line: 5, column: 7, offset: 48 },
end: { line: 5, column: 20, offset: 61 },
path: ...
}
]
*/

// information can be attached to ast, and be used in evaluate hook
const json = evaluate( ast, {
// hook object and array
hook( node, context ) {
// we can modify context.value to change evaluate result
context.value._id = 'id'
}
} )
``

License

MIT © fengzilong