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40 lines
1.1 KiB
40 lines
1.1 KiB
3 years ago
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const { Kind, GraphQLScalarType } = require('graphql')
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// const { Kind } = require('graphql/language')
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const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
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const nilUUID = '00000000-0000-0000-0000-000000000000'
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function isUUID (value) {
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return uuidRegex.test(value) || nilUUID === value
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}
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module.exports = {
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UUID: new GraphQLScalarType({
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name: 'UUID',
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description: 'The `UUID` scalar type represents UUID values as specified by [RFC 4122](https://tools.ietf.org/html/rfc4122).',
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serialize: (value) => {
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if (!isUUID(value)) {
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throw new TypeError(`UUID cannot represent non-UUID value: ${value}`)
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}
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return value.toLowerCase()
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},
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parseValue: (value) => {
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if (!isUUID(value)) {
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throw new TypeError(`UUID cannot represent non-UUID value: ${value}`)
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}
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return value.toLowerCase()
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},
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parseLiteral: (ast) => {
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if (ast.kind === Kind.STRING) {
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if (isUUID(ast.value)) {
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return ast.value
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}
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}
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return undefined
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}
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})
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}
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