18 lines
		
	
	
		
			469 B
		
	
	
	
		
			JavaScript
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			18 lines
		
	
	
		
			469 B
		
	
	
	
		
			JavaScript
		
	
	
		
			Executable File
		
	
	
	
	
| 'use strict';
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| 
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| var Scalar = require('../../nodes/Scalar.js');
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| 
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| const nullTag = {
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|     identify: value => value == null,
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|     createNode: () => new Scalar.Scalar(null),
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|     default: true,
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|     tag: 'tag:yaml.org,2002:null',
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|     test: /^(?:~|[Nn]ull|NULL)?$/,
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|     resolve: () => new Scalar.Scalar(null),
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|     stringify: ({ source }, ctx) => typeof source === 'string' && nullTag.test.test(source)
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|         ? source
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|         : ctx.options.nullStr
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| };
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| 
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| exports.nullTag = nullTag;
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