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							54 lines
						
					
					
						
							1.3 KiB
						
					
					
				
			
		
		
	
	
							54 lines
						
					
					
						
							1.3 KiB
						
					
					
				'use strict'; | 
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const errorEx = require('error-ex'); | 
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const fallback = require('json-parse-even-better-errors'); | 
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const {default: LinesAndColumns} = require('lines-and-columns'); | 
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const {codeFrameColumns} = require('@babel/code-frame'); | 
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 | 
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const JSONError = errorEx('JSONError', { | 
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	fileName: errorEx.append('in %s'), | 
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	codeFrame: errorEx.append('\n\n%s\n') | 
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}); | 
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 | 
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const parseJson = (string, reviver, filename) => { | 
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	if (typeof reviver === 'string') { | 
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		filename = reviver; | 
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		reviver = null; | 
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	} | 
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 | 
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	try { | 
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		try { | 
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			return JSON.parse(string, reviver); | 
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		} catch (error) { | 
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			fallback(string, reviver); | 
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			throw error; | 
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		} | 
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	} catch (error) { | 
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		error.message = error.message.replace(/\n/g, ''); | 
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		const indexMatch = error.message.match(/in JSON at position (\d+) while parsing/); | 
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 | 
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		const jsonError = new JSONError(error); | 
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		if (filename) { | 
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			jsonError.fileName = filename; | 
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		} | 
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 | 
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		if (indexMatch && indexMatch.length > 0) { | 
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			const lines = new LinesAndColumns(string); | 
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			const index = Number(indexMatch[1]); | 
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			const location = lines.locationForIndex(index); | 
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 | 
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			const codeFrame = codeFrameColumns( | 
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				string, | 
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				{start: {line: location.line + 1, column: location.column + 1}}, | 
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				{highlightCode: true} | 
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			); | 
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 | 
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			jsonError.codeFrame = codeFrame; | 
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		} | 
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 | 
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		throw jsonError; | 
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	} | 
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}; | 
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 | 
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parseJson.JSONError = JSONError; | 
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 | 
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module.exports = parseJson;
 | 
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