feat: initialize markr nostr bookmark client

- Add project structure with TypeScript, React, and Vite
- Implement nostr authentication using browser extension (NIP-07)
- Add NIP-51 compliant bookmark fetching and display
- Create minimal UI with login and bookmark components
- Integrate applesauce-core and applesauce-react libraries
- Add responsive styling with dark/light mode support
- Include comprehensive README with setup instructions

This is a minimal MVP for a nostr bookmark client that allows users to
view their bookmarks according to NIP-51 specification.

node_modules/@noble/curves/utils.js

@@ -0,0 +1,360 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.notImplemented = exports.bitMask = exports.utf8ToBytes = exports.randomBytes = exports.isBytes = exports.hexToBytes = exports.concatBytes = exports.bytesToUtf8 = exports.bytesToHex = exports.anumber = exports.abytes = void 0;
+exports.abool = abool;
+exports._abool2 = _abool2;
+exports._abytes2 = _abytes2;
+exports.numberToHexUnpadded = numberToHexUnpadded;
+exports.hexToNumber = hexToNumber;
+exports.bytesToNumberBE = bytesToNumberBE;
+exports.bytesToNumberLE = bytesToNumberLE;
+exports.numberToBytesBE = numberToBytesBE;
+exports.numberToBytesLE = numberToBytesLE;
+exports.numberToVarBytesBE = numberToVarBytesBE;
+exports.ensureBytes = ensureBytes;
+exports.equalBytes = equalBytes;
+exports.copyBytes = copyBytes;
+exports.asciiToBytes = asciiToBytes;
+exports.inRange = inRange;
+exports.aInRange = aInRange;
+exports.bitLen = bitLen;
+exports.bitGet = bitGet;
+exports.bitSet = bitSet;
+exports.createHmacDrbg = createHmacDrbg;
+exports.validateObject = validateObject;
+exports.isHash = isHash;
+exports._validateObject = _validateObject;
+exports.memoized = memoized;
+/**
+ * Hex, bytes and number utilities.
+ * @module
+ */
+/*! noble-curves - MIT License (c) 2022 Paul Miller (paulmillr.com) */
+const utils_js_1 = require("@noble/hashes/utils.js");
+var utils_js_2 = require("@noble/hashes/utils.js");
+Object.defineProperty(exports, "abytes", { enumerable: true, get: function () { return utils_js_2.abytes; } });
+Object.defineProperty(exports, "anumber", { enumerable: true, get: function () { return utils_js_2.anumber; } });
+Object.defineProperty(exports, "bytesToHex", { enumerable: true, get: function () { return utils_js_2.bytesToHex; } });
+Object.defineProperty(exports, "bytesToUtf8", { enumerable: true, get: function () { return utils_js_2.bytesToUtf8; } });
+Object.defineProperty(exports, "concatBytes", { enumerable: true, get: function () { return utils_js_2.concatBytes; } });
+Object.defineProperty(exports, "hexToBytes", { enumerable: true, get: function () { return utils_js_2.hexToBytes; } });
+Object.defineProperty(exports, "isBytes", { enumerable: true, get: function () { return utils_js_2.isBytes; } });
+Object.defineProperty(exports, "randomBytes", { enumerable: true, get: function () { return utils_js_2.randomBytes; } });
+Object.defineProperty(exports, "utf8ToBytes", { enumerable: true, get: function () { return utils_js_2.utf8ToBytes; } });
+const _0n = /* @__PURE__ */ BigInt(0);
+const _1n = /* @__PURE__ */ BigInt(1);
+function abool(title, value) {
+    if (typeof value !== 'boolean')
+        throw new Error(title + ' boolean expected, got ' + value);
+}
+// tmp name until v2
+function _abool2(value, title = '') {
+    if (typeof value !== 'boolean') {
+        const prefix = title && `"${title}"`;
+        throw new Error(prefix + 'expected boolean, got type=' + typeof value);
+    }
+    return value;
+}
+// tmp name until v2
+/** Asserts something is Uint8Array. */
+function _abytes2(value, length, title = '') {
+    const bytes = (0, utils_js_1.isBytes)(value);
+    const len = value?.length;
+    const needsLen = length !== undefined;
+    if (!bytes || (needsLen && len !== length)) {
+        const prefix = title && `"${title}" `;
+        const ofLen = needsLen ? ` of length ${length}` : '';
+        const got = bytes ? `length=${len}` : `type=${typeof value}`;
+        throw new Error(prefix + 'expected Uint8Array' + ofLen + ', got ' + got);
+    }
+    return value;
+}
+// Used in weierstrass, der
+function numberToHexUnpadded(num) {
+    const hex = num.toString(16);
+    return hex.length & 1 ? '0' + hex : hex;
+}
+function hexToNumber(hex) {
+    if (typeof hex !== 'string')
+        throw new Error('hex string expected, got ' + typeof hex);
+    return hex === '' ? _0n : BigInt('0x' + hex); // Big Endian
+}
+// BE: Big Endian, LE: Little Endian
+function bytesToNumberBE(bytes) {
+    return hexToNumber((0, utils_js_1.bytesToHex)(bytes));
+}
+function bytesToNumberLE(bytes) {
+    (0, utils_js_1.abytes)(bytes);
+    return hexToNumber((0, utils_js_1.bytesToHex)(Uint8Array.from(bytes).reverse()));
+}
+function numberToBytesBE(n, len) {
+    return (0, utils_js_1.hexToBytes)(n.toString(16).padStart(len * 2, '0'));
+}
+function numberToBytesLE(n, len) {
+    return numberToBytesBE(n, len).reverse();
+}
+// Unpadded, rarely used
+function numberToVarBytesBE(n) {
+    return (0, utils_js_1.hexToBytes)(numberToHexUnpadded(n));
+}
+/**
+ * Takes hex string or Uint8Array, converts to Uint8Array.
+ * Validates output length.
+ * Will throw error for other types.
+ * @param title descriptive title for an error e.g. 'secret key'
+ * @param hex hex string or Uint8Array
+ * @param expectedLength optional, will compare to result array's length
+ * @returns
+ */
+function ensureBytes(title, hex, expectedLength) {
+    let res;
+    if (typeof hex === 'string') {
+        try {
+            res = (0, utils_js_1.hexToBytes)(hex);
+        }
+        catch (e) {
+            throw new Error(title + ' must be hex string or Uint8Array, cause: ' + e);
+        }
+    }
+    else if ((0, utils_js_1.isBytes)(hex)) {
+        // Uint8Array.from() instead of hash.slice() because node.js Buffer
+        // is instance of Uint8Array, and its slice() creates **mutable** copy
+        res = Uint8Array.from(hex);
+    }
+    else {
+        throw new Error(title + ' must be hex string or Uint8Array');
+    }
+    const len = res.length;
+    if (typeof expectedLength === 'number' && len !== expectedLength)
+        throw new Error(title + ' of length ' + expectedLength + ' expected, got ' + len);
+    return res;
+}
+// Compares 2 u8a-s in kinda constant time
+function equalBytes(a, b) {
+    if (a.length !== b.length)
+        return false;
+    let diff = 0;
+    for (let i = 0; i < a.length; i++)
+        diff |= a[i] ^ b[i];
+    return diff === 0;
+}
+/**
+ * Copies Uint8Array. We can't use u8a.slice(), because u8a can be Buffer,
+ * and Buffer#slice creates mutable copy. Never use Buffers!
+ */
+function copyBytes(bytes) {
+    return Uint8Array.from(bytes);
+}
+/**
+ * Decodes 7-bit ASCII string to Uint8Array, throws on non-ascii symbols
+ * Should be safe to use for things expected to be ASCII.
+ * Returns exact same result as utf8ToBytes for ASCII or throws.
+ */
+function asciiToBytes(ascii) {
+    return Uint8Array.from(ascii, (c, i) => {
+        const charCode = c.charCodeAt(0);
+        if (c.length !== 1 || charCode > 127) {
+            throw new Error(`string contains non-ASCII character "${ascii[i]}" with code ${charCode} at position ${i}`);
+        }
+        return charCode;
+    });
+}
+/**
+ * @example utf8ToBytes('abc') // new Uint8Array([97, 98, 99])
+ */
+// export const utf8ToBytes: typeof utf8ToBytes_ = utf8ToBytes_;
+/**
+ * Converts bytes to string using UTF8 encoding.
+ * @example bytesToUtf8(Uint8Array.from([97, 98, 99])) // 'abc'
+ */
+// export const bytesToUtf8: typeof bytesToUtf8_ = bytesToUtf8_;
+// Is positive bigint
+const isPosBig = (n) => typeof n === 'bigint' && _0n <= n;
+function inRange(n, min, max) {
+    return isPosBig(n) && isPosBig(min) && isPosBig(max) && min <= n && n < max;
+}
+/**
+ * Asserts min <= n < max. NOTE: It's < max and not <= max.
+ * @example
+ * aInRange('x', x, 1n, 256n); // would assume x is in (1n..255n)
+ */
+function aInRange(title, n, min, max) {
+    // Why min <= n < max and not a (min < n < max) OR b (min <= n <= max)?
+    // consider P=256n, min=0n, max=P
+    // - a for min=0 would require -1:          `inRange('x', x, -1n, P)`
+    // - b would commonly require subtraction:  `inRange('x', x, 0n, P - 1n)`
+    // - our way is the cleanest:               `inRange('x', x, 0n, P)
+    if (!inRange(n, min, max))
+        throw new Error('expected valid ' + title + ': ' + min + ' <= n < ' + max + ', got ' + n);
+}
+// Bit operations
+/**
+ * Calculates amount of bits in a bigint.
+ * Same as `n.toString(2).length`
+ * TODO: merge with nLength in modular
+ */
+function bitLen(n) {
+    let len;
+    for (len = 0; n > _0n; n >>= _1n, len += 1)
+        ;
+    return len;
+}
+/**
+ * Gets single bit at position.
+ * NOTE: first bit position is 0 (same as arrays)
+ * Same as `!!+Array.from(n.toString(2)).reverse()[pos]`
+ */
+function bitGet(n, pos) {
+    return (n >> BigInt(pos)) & _1n;
+}
+/**
+ * Sets single bit at position.
+ */
+function bitSet(n, pos, value) {
+    return n | ((value ? _1n : _0n) << BigInt(pos));
+}
+/**
+ * Calculate mask for N bits. Not using ** operator with bigints because of old engines.
+ * Same as BigInt(`0b${Array(i).fill('1').join('')}`)
+ */
+const bitMask = (n) => (_1n << BigInt(n)) - _1n;
+exports.bitMask = bitMask;
+/**
+ * Minimal HMAC-DRBG from NIST 800-90 for RFC6979 sigs.
+ * @returns function that will call DRBG until 2nd arg returns something meaningful
+ * @example
+ *   const drbg = createHmacDRBG<Key>(32, 32, hmac);
+ *   drbg(seed, bytesToKey); // bytesToKey must return Key or undefined
+ */
+function createHmacDrbg(hashLen, qByteLen, hmacFn) {
+    if (typeof hashLen !== 'number' || hashLen < 2)
+        throw new Error('hashLen must be a number');
+    if (typeof qByteLen !== 'number' || qByteLen < 2)
+        throw new Error('qByteLen must be a number');
+    if (typeof hmacFn !== 'function')
+        throw new Error('hmacFn must be a function');
+    // Step B, Step C: set hashLen to 8*ceil(hlen/8)
+    const u8n = (len) => new Uint8Array(len); // creates Uint8Array
+    const u8of = (byte) => Uint8Array.of(byte); // another shortcut
+    let v = u8n(hashLen); // Minimal non-full-spec HMAC-DRBG from NIST 800-90 for RFC6979 sigs.
+    let k = u8n(hashLen); // Steps B and C of RFC6979 3.2: set hashLen, in our case always same
+    let i = 0; // Iterations counter, will throw when over 1000
+    const reset = () => {
+        v.fill(1);
+        k.fill(0);
+        i = 0;
+    };
+    const h = (...b) => hmacFn(k, v, ...b); // hmac(k)(v, ...values)
+    const reseed = (seed = u8n(0)) => {
+        // HMAC-DRBG reseed() function. Steps D-G
+        k = h(u8of(0x00), seed); // k = hmac(k || v || 0x00 || seed)
+        v = h(); // v = hmac(k || v)
+        if (seed.length === 0)
+            return;
+        k = h(u8of(0x01), seed); // k = hmac(k || v || 0x01 || seed)
+        v = h(); // v = hmac(k || v)
+    };
+    const gen = () => {
+        // HMAC-DRBG generate() function
+        if (i++ >= 1000)
+            throw new Error('drbg: tried 1000 values');
+        let len = 0;
+        const out = [];
+        while (len < qByteLen) {
+            v = h();
+            const sl = v.slice();
+            out.push(sl);
+            len += v.length;
+        }
+        return (0, utils_js_1.concatBytes)(...out);
+    };
+    const genUntil = (seed, pred) => {
+        reset();
+        reseed(seed); // Steps D-G
+        let res = undefined; // Step H: grind until k is in [1..n-1]
+        while (!(res = pred(gen())))
+            reseed();
+        reset();
+        return res;
+    };
+    return genUntil;
+}
+// Validating curves and fields
+const validatorFns = {
+    bigint: (val) => typeof val === 'bigint',
+    function: (val) => typeof val === 'function',
+    boolean: (val) => typeof val === 'boolean',
+    string: (val) => typeof val === 'string',
+    stringOrUint8Array: (val) => typeof val === 'string' || (0, utils_js_1.isBytes)(val),
+    isSafeInteger: (val) => Number.isSafeInteger(val),
+    array: (val) => Array.isArray(val),
+    field: (val, object) => object.Fp.isValid(val),
+    hash: (val) => typeof val === 'function' && Number.isSafeInteger(val.outputLen),
+};
+// type Record<K extends string | number | symbol, T> = { [P in K]: T; }
+function validateObject(object, validators, optValidators = {}) {
+    const checkField = (fieldName, type, isOptional) => {
+        const checkVal = validatorFns[type];
+        if (typeof checkVal !== 'function')
+            throw new Error('invalid validator function');
+        const val = object[fieldName];
+        if (isOptional && val === undefined)
+            return;
+        if (!checkVal(val, object)) {
+            throw new Error('param ' + String(fieldName) + ' is invalid. Expected ' + type + ', got ' + val);
+        }
+    };
+    for (const [fieldName, type] of Object.entries(validators))
+        checkField(fieldName, type, false);
+    for (const [fieldName, type] of Object.entries(optValidators))
+        checkField(fieldName, type, true);
+    return object;
+}
+// validate type tests
+// const o: { a: number; b: number; c: number } = { a: 1, b: 5, c: 6 };
+// const z0 = validateObject(o, { a: 'isSafeInteger' }, { c: 'bigint' }); // Ok!
+// // Should fail type-check
+// const z1 = validateObject(o, { a: 'tmp' }, { c: 'zz' });
+// const z2 = validateObject(o, { a: 'isSafeInteger' }, { c: 'zz' });
+// const z3 = validateObject(o, { test: 'boolean', z: 'bug' });
+// const z4 = validateObject(o, { a: 'boolean', z: 'bug' });
+function isHash(val) {
+    return typeof val === 'function' && Number.isSafeInteger(val.outputLen);
+}
+function _validateObject(object, fields, optFields = {}) {
+    if (!object || typeof object !== 'object')
+        throw new Error('expected valid options object');
+    function checkField(fieldName, expectedType, isOpt) {
+        const val = object[fieldName];
+        if (isOpt && val === undefined)
+            return;
+        const current = typeof val;
+        if (current !== expectedType || val === null)
+            throw new Error(`param "${fieldName}" is invalid: expected ${expectedType}, got ${current}`);
+    }
+    Object.entries(fields).forEach(([k, v]) => checkField(k, v, false));
+    Object.entries(optFields).forEach(([k, v]) => checkField(k, v, true));
+}
+/**
+ * throws not implemented error
+ */
+const notImplemented = () => {
+    throw new Error('not implemented');
+};
+exports.notImplemented = notImplemented;
+/**
+ * Memoizes (caches) computation result.
+ * Uses WeakMap: the value is going auto-cleaned by GC after last reference is removed.
+ */
+function memoized(fn) {
+    const map = new WeakMap();
+    return (arg, ...args) => {
+        const val = map.get(arg);
+        if (val !== undefined)
+            return val;
+        const computed = fn(arg, ...args);
+        map.set(arg, computed);
+        return computed;
+    };
+}
+//# sourceMappingURL=utils.js.map