28 lines
860 B
JavaScript
28 lines
860 B
JavaScript
// This is an implementation of the validForNewPackage flag in validate-npm-package-license, which is no longer maintained
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const parse = require('spdx-expression-parse')
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function usesLicenseRef (ast) {
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if (Object.hasOwn(ast, 'license')) {
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return ast.license.startsWith('LicenseRef') || ast.license.startsWith('DocumentRef')
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} else {
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return usesLicenseRef(ast.left) || usesLicenseRef(ast.right)
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}
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}
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// license should be a valid SPDX license expression (without "LicenseRef"), "UNLICENSED", or "SEE LICENSE IN <filename>"
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module.exports = function licenseValidForNewPackage (argument) {
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if (argument === 'UNLICENSED' || argument === 'UNLICENCED') {
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return true
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}
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if (/^SEE LICEN[CS]E IN ./.test(argument)) {
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return true
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}
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try {
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const ast = parse(argument)
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return !usesLicenseRef(ast)
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} catch {
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return false
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}
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}
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