chore: update to version 14.0.11 and align website URLs

2026-04-25 05:57:57 +00:00 · 2026-01-11 11:34:13 +03:00
parent ef74383349
commit 19c8d69bd8
1499 changed files with 53633 additions and 89 deletions
@@ -0,0 +1,45 @@
+import { BN, BN_ONE, BN_TWO, bnToBn, bnToU8a } from '../bn/index.js';
+import { u8aConcatStrict } from '../u8a/index.js';
+const MAX_U8 = BN_TWO.pow(new BN(8 - 2)).isub(BN_ONE);
+const MAX_U16 = BN_TWO.pow(new BN(16 - 2)).isub(BN_ONE);
+const MAX_U32 = BN_TWO.pow(new BN(32 - 2)).isub(BN_ONE);
+const BL_16 = { bitLength: 16 };
+const BL_32 = { bitLength: 32 };
+/**
+ * @name compactToU8a
+ * @description Encodes a number into a compact representation
+ * @example
+ * <BR>
+ *
+ * ```javascript
+ * import { compactToU8a } from '@pezkuwi/util';
+ *
+ * console.log(compactToU8a(511, 32)); // Uint8Array([0b11111101, 0b00000111])
+ * ```
+ */
+export function compactToU8a(value) {
+    const bn = bnToBn(value);
+    if (bn.lte(MAX_U8)) {
+        return new Uint8Array([bn.toNumber() << 2]);
+    }
+    else if (bn.lte(MAX_U16)) {
+        return bnToU8a(bn.shln(2).iadd(BN_ONE), BL_16);
+    }
+    else if (bn.lte(MAX_U32)) {
+        return bnToU8a(bn.shln(2).iadd(BN_TWO), BL_32);
+    }
+    const u8a = bnToU8a(bn);
+    let length = u8a.length;
+    // adjust to the minimum number of bytes
+    while (u8a[length - 1] === 0) {
+        length--;
+    }
+    if (length < 4) {
+        throw new Error('Invalid length, previous checks match anything less than 2^30');
+    }
+    return u8aConcatStrict([
+        // subtract 4 as minimum (also catered for in decoding)
+        new Uint8Array([((length - 4) << 2) + 0b11]),
+        u8a.subarray(0, length)
+    ]);
+}