move to pkg

packages/system/dist/Util.js

@@ -0,0 +1,148 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.bech32ToHex = exports.getPublicKey = exports.sha256 = exports.findTag = exports.appendDedupe = exports.dedupe = exports.distance = exports.deepEqual = exports.unixNowMs = exports.unixNow = exports.sanitizeRelayUrl = exports.hexToBech32 = exports.unwrap = void 0;
+const utils = __importStar(require("@noble/curves/abstract/utils"));
+const secp = __importStar(require("@noble/curves/secp256k1"));
+const sha256_1 = require("@noble/hashes/sha256");
+const bech32_1 = require("bech32");
+function unwrap(v) {
+    if (v === undefined || v === null) {
+        throw new Error("missing value");
+    }
+    return v;
+}
+exports.unwrap = unwrap;
+/**
+ * Convert hex to bech32
+ */
+function hexToBech32(hrp, hex) {
+    if (typeof hex !== "string" || hex.length === 0 || hex.length % 2 !== 0) {
+        return "";
+    }
+    try {
+        const buf = utils.hexToBytes(hex);
+        return bech32_1.bech32.encode(hrp, bech32_1.bech32.toWords(buf));
+    }
+    catch (e) {
+        console.warn("Invalid hex", hex, e);
+        return "";
+    }
+}
+exports.hexToBech32 = hexToBech32;
+function sanitizeRelayUrl(url) {
+    try {
+        return new URL(url).toString();
+    }
+    catch {
+        // ignore
+    }
+}
+exports.sanitizeRelayUrl = sanitizeRelayUrl;
+function unixNow() {
+    return Math.floor(unixNowMs() / 1000);
+}
+exports.unixNow = unixNow;
+function unixNowMs() {
+    return new Date().getTime();
+}
+exports.unixNowMs = unixNowMs;
+function deepEqual(x, y) {
+    const ok = Object.keys, tx = typeof x, ty = typeof y;
+    return x && y && tx === "object" && tx === ty
+        ? ok(x).length === ok(y).length && ok(x).every(key => deepEqual(x[key], y[key]))
+        : x === y;
+}
+exports.deepEqual = deepEqual;
+/**
+ * Compute the "distance" between two objects by comparing their difference in properties
+ * Missing/Added keys result in +10 distance
+ * This is not recursive
+ */
+function distance(a, b) {
+    const keys1 = Object.keys(a);
+    const keys2 = Object.keys(b);
+    const maxKeys = keys1.length > keys2.length ? keys1 : keys2;
+    let distance = 0;
+    for (const key of maxKeys) {
+        if (key in a && key in b) {
+            if (Array.isArray(a[key]) && Array.isArray(b[key])) {
+                const aa = a[key];
+                const bb = b[key];
+                if (aa.length === bb.length) {
+                    if (aa.some(v => !bb.includes(v))) {
+                        distance++;
+                    }
+                }
+                else {
+                    distance++;
+                }
+            }
+            else if (a[key] !== b[key]) {
+                distance++;
+            }
+        }
+        else {
+            distance += 10;
+        }
+    }
+    return distance;
+}
+exports.distance = distance;
+function dedupe(v) {
+    return [...new Set(v)];
+}
+exports.dedupe = dedupe;
+function appendDedupe(a, b) {
+    return dedupe([...(a ?? []), ...(b ?? [])]);
+}
+exports.appendDedupe = appendDedupe;
+function findTag(e, tag) {
+    const maybeTag = e.tags.find(evTag => {
+        return evTag[0] === tag;
+    });
+    return maybeTag && maybeTag[1];
+}
+exports.findTag = findTag;
+const sha256 = (str) => {
+    return utils.bytesToHex((0, sha256_1.sha256)(str));
+};
+exports.sha256 = sha256;
+function getPublicKey(privKey) {
+    return utils.bytesToHex(secp.schnorr.getPublicKey(privKey));
+}
+exports.getPublicKey = getPublicKey;
+function bech32ToHex(str) {
+    try {
+        const nKey = bech32_1.bech32.decode(str, 1000);
+        const buff = bech32_1.bech32.fromWords(nKey.words);
+        return utils.bytesToHex(Uint8Array.from(buff));
+    }
+    catch (e) {
+        return str;
+    }
+}
+exports.bech32ToHex = bech32ToHex;
+//# sourceMappingURL=Util.js.map