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							- 'use strict';
 
- const propertyToValueAliases = require('./data/mappings.js');
 
- const matchPropertyValue = function(property, value) {
 
- 	const aliasToValue = propertyToValueAliases.get(property);
 
- 	if (!aliasToValue) {
 
- 		throw new Error(`Unknown property \`${ property }\`.`);
 
- 	}
 
- 	const canonicalValue = aliasToValue.get(value);
 
- 	if (canonicalValue) {
 
- 		return canonicalValue;
 
- 	}
 
- 	throw new Error(
 
- 		`Unknown value \`${ value }\` for property \`${ property }\`.`
 
- 	);
 
- };
 
- module.exports = matchPropertyValue;
 
 
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