cidr-block - npm Package Compare versions

Comparing version 2.1.1 to 2.2.0

dist/cjs/ipv4-cidr.cjs

@@ -31,2 +31,3 @@ 'use strict';
  * cidr.netmask().toString();     // "255.255.255.0"
+ * cidr.network().toString();     // "192.168.0.0"
  * cidr.addressCount();           // 256
@@ -165,2 +166,40 @@ * ```
     /**
+     * Calculates the network address by applying the netmask to the base address.
+     *
+     * @example
+     * ```ts
+     * import { ipv4 } from 'cidr-block';
+     *
+     * ipv4.cidr("192.168.1.5/24").network().toString(); // "192.168.1.0"
+     * ipv4.cidr("10.5.10.20/8").network().toString();   // "10.0.0.0"
+     * ipv4.cidr("172.16.5.1/16").network().toString();  // "172.16.0.0"
+     * ```
+     *
+     * @returns The network address as an Ipv4Address.
+     */
+    network() {
+        const maskNumber = this.#range === 0 ? 0 : (-1 << (32 - this.#range)) >>> 0;
+        const networkNumber = (this.#address.toNumber() & maskNumber) >>> 0;
+        return new ipv4Address.Ipv4Address(networkNumber);
+    }
+    /**
+     * Calculates the network CIDR by applying the netmask to the base address and returning a CIDR with the network address.
+     *
+     * @example
+     * ```ts
+     * import { ipv4 } from 'cidr-block';
+     *
+     * ipv4.cidr("192.168.1.5/24").networkCIDR().toString(); // "192.168.1.0/24"
+     * ipv4.cidr("10.5.10.20/8").networkCIDR().toString();   // "10.0.0.0/8"
+     * ipv4.cidr("172.16.5.1/16").networkCIDR().toString();  // "172.16.0.0/16"
+     * ```
+     *
+     * @returns The network CIDR as an Ipv4Cidr.
+     */
+    networkCIDR() {
+        const maskNumber = this.#range === 0 ? 0 : (-1 << (32 - this.#range)) >>> 0;
+        const networkNumber = (this.#address.toNumber() & maskNumber) >>> 0;
+        return new Ipv4Cidr([networkNumber, this.#range]);
+    }
+    /**
      * Returns the string representation of the IPv4 CIDR.
@@ -167,0 +206,0 @@ *

dist/cjs/ipv4-cidr.cjs.map

@@ -1,1 +0,1 @@
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dist/cjs/ipv6-cidr.cjs

@@ -31,2 +31,3 @@ 'use strict';
  * cidr.netmask().toString();     // "ffff:ffff::"
+ * cidr.network().toString();     // "2001:db8::"
  * cidr.addressCount();           // 79228162514264337593543950336n
@@ -154,2 +155,46 @@ * ```
     /**
+     * Calculates the network address by applying the netmask to the base address.
+     *
+     * @example
+     * ```ts
+     * import { ipv6 } from 'cidr-block';
+     *
+     * ipv6.cidr("2001:db8::1234/32").network().toString();        // "2001:db8::"
+     * ipv6.cidr("2001:db8:1:2:3:4:5:6/64").network().toString();  // "2001:db8:1:2::"
+     * ipv6.cidr("2001:db8:abcd::/48").network().toString();       // "2001:db8:abcd::"
+     * ```
+     *
+     * @returns The network address as an Ipv6Address.
+     */
+    network() {
+        if (this.#range === 0) {
+            return new ipv6Address.Ipv6Address(0n);
+        }
+        const mask = (1n << 128n) - (1n << BigInt(128 - this.#range));
+        const networkNumber = this.#address.toBigInt() & mask;
+        return new ipv6Address.Ipv6Address(networkNumber);
+    }
+    /**
+     * Calculates the network CIDR by applying the netmask to the base address and returning a CIDR with the network address.
+     *
+     * @example
+     * ```ts
+     * import { ipv6 } from 'cidr-block';
+     *
+     * ipv6.cidr("2001:db8::1234/32").networkCIDR().toString();        // "2001:db8::/32"
+     * ipv6.cidr("2001:db8:1:2:3:4:5:6/64").networkCIDR().toString();  // "2001:db8:1:2::/64"
+     * ipv6.cidr("2001:db8:abcd::/48").networkCIDR().toString();       // "2001:db8:abcd::/48"
+     * ```
+     *
+     * @returns The network CIDR as an Ipv6Cidr.
+     */
+    networkCIDR() {
+        if (this.#range === 0) {
+            return new Ipv6Cidr([0n, 0]);
+        }
+        const mask = (1n << 128n) - (1n << BigInt(128 - this.#range));
+        const networkNumber = this.#address.toBigInt() & mask;
+        return new Ipv6Cidr([networkNumber, this.#range]);
+    }
+    /**
      * Returns the string representation of the IPv6 CIDR.
@@ -156,0 +201,0 @@ *

dist/cjs/ipv6-cidr.cjs.map

@@ -1,1 +0,1 @@
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dist/esm/ipv4-cidr.d.ts

@@ -27,2 +27,3 @@ import { Ipv4Address } from './ipv4-address';
  * cidr.netmask().toString();     // "255.255.255.0"
+ * cidr.network().toString();     // "192.168.0.0"
  * cidr.addressCount();           // 256
@@ -133,2 +134,32 @@ * ```
     /**
+     * Calculates the network address by applying the netmask to the base address.
+     *
+     * @example
+     * ```ts
+     * import { ipv4 } from 'cidr-block';
+     *
+     * ipv4.cidr("192.168.1.5/24").network().toString(); // "192.168.1.0"
+     * ipv4.cidr("10.5.10.20/8").network().toString();   // "10.0.0.0"
+     * ipv4.cidr("172.16.5.1/16").network().toString();  // "172.16.0.0"
+     * ```
+     *
+     * @returns The network address as an Ipv4Address.
+     */
+    network(): Ipv4Address;
+    /**
+     * Calculates the network CIDR by applying the netmask to the base address and returning a CIDR with the network address.
+     *
+     * @example
+     * ```ts
+     * import { ipv4 } from 'cidr-block';
+     *
+     * ipv4.cidr("192.168.1.5/24").networkCIDR().toString(); // "192.168.1.0/24"
+     * ipv4.cidr("10.5.10.20/8").networkCIDR().toString();   // "10.0.0.0/8"
+     * ipv4.cidr("172.16.5.1/16").networkCIDR().toString();  // "172.16.0.0/16"
+     * ```
+     *
+     * @returns The network CIDR as an Ipv4Cidr.
+     */
+    networkCIDR(): Ipv4Cidr;
+    /**
      * Returns the string representation of the IPv4 CIDR.
@@ -135,0 +166,0 @@ *

dist/esm/ipv4-cidr.d.ts.map

@@ -1,1 +0,1 @@
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dist/esm/ipv4-cidr.js

@@ -29,2 +29,3 @@ import { ipv4 } from './ipv4.js';
  * cidr.netmask().toString();     // "255.255.255.0"
+ * cidr.network().toString();     // "192.168.0.0"
  * cidr.addressCount();           // 256
@@ -163,2 +164,40 @@ * ```
     /**
+     * Calculates the network address by applying the netmask to the base address.
+     *
+     * @example
+     * ```ts
+     * import { ipv4 } from 'cidr-block';
+     *
+     * ipv4.cidr("192.168.1.5/24").network().toString(); // "192.168.1.0"
+     * ipv4.cidr("10.5.10.20/8").network().toString();   // "10.0.0.0"
+     * ipv4.cidr("172.16.5.1/16").network().toString();  // "172.16.0.0"
+     * ```
+     *
+     * @returns The network address as an Ipv4Address.
+     */
+    network() {
+        const maskNumber = this.#range === 0 ? 0 : (-1 << (32 - this.#range)) >>> 0;
+        const networkNumber = (this.#address.toNumber() & maskNumber) >>> 0;
+        return new Ipv4Address(networkNumber);
+    }
+    /**
+     * Calculates the network CIDR by applying the netmask to the base address and returning a CIDR with the network address.
+     *
+     * @example
+     * ```ts
+     * import { ipv4 } from 'cidr-block';
+     *
+     * ipv4.cidr("192.168.1.5/24").networkCIDR().toString(); // "192.168.1.0/24"
+     * ipv4.cidr("10.5.10.20/8").networkCIDR().toString();   // "10.0.0.0/8"
+     * ipv4.cidr("172.16.5.1/16").networkCIDR().toString();  // "172.16.0.0/16"
+     * ```
+     *
+     * @returns The network CIDR as an Ipv4Cidr.
+     */
+    networkCIDR() {
+        const maskNumber = this.#range === 0 ? 0 : (-1 << (32 - this.#range)) >>> 0;
+        const networkNumber = (this.#address.toNumber() & maskNumber) >>> 0;
+        return new Ipv4Cidr([networkNumber, this.#range]);
+    }
+    /**
      * Returns the string representation of the IPv4 CIDR.
@@ -165,0 +204,0 @@ *

dist/esm/ipv4-cidr.js.map

@@ -1,1 +0,1 @@
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dist/esm/ipv6-cidr.d.ts

@@ -27,2 +27,3 @@ import { Ipv6Address } from './ipv6-address';
  * cidr.netmask().toString();     // "ffff:ffff::"
+ * cidr.network().toString();     // "2001:db8::"
  * cidr.addressCount();           // 79228162514264337593543950336n
@@ -118,2 +119,32 @@ * ```
     /**
+     * Calculates the network address by applying the netmask to the base address.
+     *
+     * @example
+     * ```ts
+     * import { ipv6 } from 'cidr-block';
+     *
+     * ipv6.cidr("2001:db8::1234/32").network().toString();        // "2001:db8::"
+     * ipv6.cidr("2001:db8:1:2:3:4:5:6/64").network().toString();  // "2001:db8:1:2::"
+     * ipv6.cidr("2001:db8:abcd::/48").network().toString();       // "2001:db8:abcd::"
+     * ```
+     *
+     * @returns The network address as an Ipv6Address.
+     */
+    network(): Ipv6Address;
+    /**
+     * Calculates the network CIDR by applying the netmask to the base address and returning a CIDR with the network address.
+     *
+     * @example
+     * ```ts
+     * import { ipv6 } from 'cidr-block';
+     *
+     * ipv6.cidr("2001:db8::1234/32").networkCIDR().toString();        // "2001:db8::/32"
+     * ipv6.cidr("2001:db8:1:2:3:4:5:6/64").networkCIDR().toString();  // "2001:db8:1:2::/64"
+     * ipv6.cidr("2001:db8:abcd::/48").networkCIDR().toString();       // "2001:db8:abcd::/48"
+     * ```
+     *
+     * @returns The network CIDR as an Ipv6Cidr.
+     */
+    networkCIDR(): Ipv6Cidr;
+    /**
      * Returns the string representation of the IPv6 CIDR.
@@ -120,0 +151,0 @@ *

dist/esm/ipv6-cidr.d.ts.map

@@ -1,1 +0,1 @@
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dist/esm/ipv6-cidr.js

@@ -29,2 +29,3 @@ import { ipv6 } from './ipv6.js';
  * cidr.netmask().toString();     // "ffff:ffff::"
+ * cidr.network().toString();     // "2001:db8::"
  * cidr.addressCount();           // 79228162514264337593543950336n
@@ -152,2 +153,46 @@ * ```
     /**
+     * Calculates the network address by applying the netmask to the base address.
+     *
+     * @example
+     * ```ts
+     * import { ipv6 } from 'cidr-block';
+     *
+     * ipv6.cidr("2001:db8::1234/32").network().toString();        // "2001:db8::"
+     * ipv6.cidr("2001:db8:1:2:3:4:5:6/64").network().toString();  // "2001:db8:1:2::"
+     * ipv6.cidr("2001:db8:abcd::/48").network().toString();       // "2001:db8:abcd::"
+     * ```
+     *
+     * @returns The network address as an Ipv6Address.
+     */
+    network() {
+        if (this.#range === 0) {
+            return new Ipv6Address(0n);
+        }
+        const mask = (1n << 128n) - (1n << BigInt(128 - this.#range));
+        const networkNumber = this.#address.toBigInt() & mask;
+        return new Ipv6Address(networkNumber);
+    }
+    /**
+     * Calculates the network CIDR by applying the netmask to the base address and returning a CIDR with the network address.
+     *
+     * @example
+     * ```ts
+     * import { ipv6 } from 'cidr-block';
+     *
+     * ipv6.cidr("2001:db8::1234/32").networkCIDR().toString();        // "2001:db8::/32"
+     * ipv6.cidr("2001:db8:1:2:3:4:5:6/64").networkCIDR().toString();  // "2001:db8:1:2::/64"
+     * ipv6.cidr("2001:db8:abcd::/48").networkCIDR().toString();       // "2001:db8:abcd::/48"
+     * ```
+     *
+     * @returns The network CIDR as an Ipv6Cidr.
+     */
+    networkCIDR() {
+        if (this.#range === 0) {
+            return new Ipv6Cidr([0n, 0]);
+        }
+        const mask = (1n << 128n) - (1n << BigInt(128 - this.#range));
+        const networkNumber = this.#address.toBigInt() & mask;
+        return new Ipv6Cidr([networkNumber, this.#range]);
+    }
+    /**
      * Returns the string representation of the IPv6 CIDR.
@@ -154,0 +199,0 @@ *

dist/esm/ipv6-cidr.js.map

@@ -1,1 +0,1 @@
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package.json

 {
   "name": "cidr-block",
   "description": "IPv4 and IPv6 address and cidr range utilities",
-  "version": "2.1.1",
+  "version": "2.2.0",
   "license": "MIT",
@@ -6,0 +6,0 @@ "author": "Brandon Burrus <[e-mail]>",

README.md

@@ -189,2 +189,7 @@ IPv4 and IPv6 address and CIDR range utilities for JavaScript and TypeScript.
 cidr.rangeParts();                // [Ipv4Address, 24]
+
+// Calculate network address from CIDR with host bits
+const hostCidr = ipv4.cidr('192.168.1.5/24');
+hostCidr.network().toString();      // "192.168.1.0"
+hostCidr.networkCIDR().toString();  // "192.168.1.0/24"
 ```
@@ -444,2 +449,7 @@
 cidr.addressCount();              // 79228162514264337593543950336n (BigInt)
+
+// Calculate network address from CIDR with host bits
+const hostCidr = ipv6.cidr('2001:db8::1234/32');
+hostCidr.network().toString();      // "2001:db8::"
+hostCidr.networkCIDR().toString();  // "2001:db8::/32"
 ```
@@ -698,1 +708,27 @@
 ```
+
+### Normalizing CIDR Blocks
+
+```typescript
+import { ipv4, ipv6 } from 'cidr-block';
+
+// Normalize IPv4 CIDR by removing host bits
+function normalizeIPv4CIDR(cidrStr: string): string {
+  const cidr = ipv4.cidr(cidrStr);
+  return cidr.networkCIDR().toString();
+}
+
+normalizeIPv4CIDR('192.168.1.5/24');    // "192.168.1.0/24"
+normalizeIPv4CIDR('10.5.10.20/8');      // "10.0.0.0/8"
+normalizeIPv4CIDR('172.16.50.100/12');  // "172.16.0.0/12"
+
+// Normalize IPv6 CIDR by removing host bits
+function normalizeIPv6CIDR(cidrStr: string): string {
+  const cidr = ipv6.cidr(cidrStr);
+  return cidr.networkCIDR().toString();
+}
+
+normalizeIPv6CIDR('2001:db8::1234/32');                   // "2001:db8::/32"
+normalizeIPv6CIDR('2001:db8:1:2:3:4:5:6/64');             // "2001:db8:1:2::/64"
+normalizeIPv6CIDR('2001:db8:abcd:ef01::/48');             // "2001:db8:abcd::/48"
+```

No alert changes

Improved metrics

Total package byte prevSize

420616

3.77%

Lines of code

7526

3.15%

Number of lines in readme file

732

5.17%

No dependency changes