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node_modules/@hapi/address/esm/ip.js

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+import { assert } from '@hapi/hoek';
+import { ipVersions } from './uri';
+/**
+ * Generates a regular expression used to validate IP addresses.
+ *
+ * @param options - optional settings.
+ *
+ * @returns an object with the regular expression and meta data.
+ */
+export function ipRegex(options = {}) {
+    // CIDR
+    const cidr = options.cidr || 'optional';
+    assert(['required', 'optional', 'forbidden'].includes(cidr), 'options.cidr must be one of required, optional, forbidden');
+    // Versions
+    assert(options.version === undefined || typeof options.version === 'string' || Array.isArray(options.version), 'options.version must be a string or an array of string');
+    let versions = options.version || ['ipv4', 'ipv6', 'ipvfuture'];
+    if (!Array.isArray(versions)) {
+        versions = [versions];
+    }
+    assert(versions.length >= 1, 'options.version must have at least 1 version specified');
+    for (const version of versions) {
+        assert(typeof version === 'string' && version === version.toLowerCase(), 'Invalid options.version value');
+        assert(['ipv4', 'ipv6', 'ipvfuture'].includes(version), 'options.version contains unknown version ' + version + ' - must be one of ipv4, ipv6, ipvfuture');
+    }
+    versions = Array.from(new Set(versions));
+    // Regex
+    const parts = versions.map((version) => {
+        // Forbidden
+        if (cidr === 'forbidden') {
+            return ipVersions[version];
+        }
+        // Required
+        const cidrpart = `\\/${version === 'ipv4' ? ipVersions.v4Cidr : ipVersions.v6Cidr}`;
+        if (cidr === 'required') {
+            return `${ipVersions[version]}${cidrpart}`;
+        }
+        // Optional
+        return `${ipVersions[version]}(?:${cidrpart})?`;
+    });
+    const raw = `(?:${parts.join('|')})`;
+    const regex = new RegExp(`^${raw}$`);
+    return { cidr, versions, regex, raw };
+}
+//# sourceMappingURL=ip.js.map