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shrine-medco/shrine-webclient/src/main/html/node_modules/validate-npm-package-license/index.js
2511dc6acf771.22.2.1

index.js
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			var parse = require('spdx-expression-parse');
			var correct = require('spdx-correct');

			var genericWarning = (
			'license should be ' +
			'a valid SPDX license expression (without "LicenseRef"), ' +
			'"UNLICENSED", or ' +
			'"SEE LICENSE IN <filename>"'
			);

			var fileReferenceRE = /^SEE LICEN[CS]E IN (.+)$/;

			function startsWith(prefix, string) {
			return string.slice(0, prefix.length) === prefix;
			}

			function usesLicenseRef(ast) {
			if (ast.hasOwnProperty('license')) {
			var license = ast.license;
			return (
			startsWith('LicenseRef', license) \|\|
			startsWith('DocumentRef', license)
			);
			} else {
			return (
			usesLicenseRef(ast.left) \|\|
			usesLicenseRef(ast.right)
			);
			}
			}

			module.exports = function(argument) {
			var ast;

			try {
			ast = parse(argument);
			} catch (e) {
			var match
			if (
			argument === 'UNLICENSED' \|\|
			argument === 'UNLICENCED'
			) {
			return {
			validForOldPackages: true,
			validForNewPackages: true,
			unlicensed: true
			};
			} else if (match = fileReferenceRE.exec(argument)) {
			return {
			validForOldPackages: true,
			validForNewPackages: true,
			inFile: match[1]
			};
			} else {
			var result = {
			validForOldPackages: false,
			validForNewPackages: false,
			warnings: [genericWarning]
			};
			var corrected = correct(argument);
			if (corrected) {
			result.warnings.push(
			'license is similar to the valid expression "' + corrected + '"'
			);
			}
			return result;
			}
			}

			if (usesLicenseRef(ast)) {
			return {
			validForNewPackages: false,
			validForOldPackages: false,
			spdx: true,
			warnings: [genericWarning]
			};
			} else {
			return {
			validForNewPackages: true,
			validForOldPackages: true,
			spdx: true
			};
			}
			};