16 lines
434 B
JavaScript
16 lines
434 B
JavaScript
|
import { Scalar } from '../../nodes/Scalar.js';
|
||
|
|
||
|
const nullTag = {
|
||
|
identify: value => value == null,
|
||
|
createNode: () => new Scalar(null),
|
||
|
default: true,
|
||
|
tag: 'tag:yaml.org,2002:null',
|
||
|
test: /^(?:~|[Nn]ull|NULL)?$/,
|
||
|
resolve: () => new Scalar(null),
|
||
|
stringify: ({ source }, ctx) => typeof source === 'string' && nullTag.test.test(source)
|
||
|
? source
|
||
|
: ctx.options.nullStr
|
||
|
};
|
||
|
|
||
|
export { nullTag };
|