[create-xpub] Add types

types/create-xpub/create-xpub-tests.ts

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+import createXpub = require('create-xpub');
+
+// $ExpectType string
+createXpub({
+    depth: 3,
+    childNumber: 2147483648,
+    chainCode: '84cf7d9029cdd9fcadbb3717fd92ec0db7d7d9787c57c13c08fc887c389b566b',
+    publicKey:
+        '048bcdcf59f046b13f1eb35b608d1211265fde8cc44fc7a5a7f7107c5cf238095328a0e0d7be17c7d3e48490e8c6433af6d2c3dacc687f3fecaa98a3d05f17de97',
+});
+
+// $ExpectType string
+createXpub({
+    networkVersion: createXpub.testnet,
+    depth: 3,
+    childNumber: 2147483648,
+    chainCode: '84cf7d9029cdd9fcadbb3717fd92ec0db7d7d9787c57c13c08fc887c389b566b',
+    publicKey:
+        '048bcdcf59f046b13f1eb35b608d1211265fde8cc44fc7a5a7f7107c5cf238095328a0e0d7be17c7d3e48490e8c6433af6d2c3dacc687f3fecaa98a3d05f17de97',
+});
+
+createXpub.mainnet; // $ExpectType 76067358
+createXpub.testnet; // $ExpectType 70617039

types/create-xpub/index.d.ts

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+// Type definitions for create-xpub 2.1
+// Project: https://github.com/lukechilds/create-xpub#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = createXpub;
+
+/**
+ * Creates a Base58 encoded extended public key (xpub) for use in a
+ * [BIP32 hierarchical deterministic wallet](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki).
+ *
+ * Tip: If you're working with ledgerjs you can pass the output of
+ * [`getWalletPublicKey()`](http://ledgerhq.github.io/ledgerjs/docs/#btcgetwalletpublickey) almost directly in.
+ *
+ * @returns A Base58 encoded extended public key.
+ */
+declare function createXpub(options: createXpub.Options): string;
+
+declare namespace createXpub {
+    /**
+     * Mainnet (xpub) version bytes.
+     */
+    const mainnet: 0x0488B21E;
+    /**
+     * Testnet (tpub) version bytes.
+     */
+    const testnet: 0x043587CF;
+
+    interface Options {
+        /**
+         * Network version bytes.
+         * @default 0x0488B21E
+         */
+        networkVersion?: number;
+        /**
+         * The depth of the derived key.
+         */
+        depth: number;
+        /**
+         * The child number.
+         */
+        childNumber: number;
+        /**
+         * The chain code.
+         */
+        chainCode: string;
+        /**
+         * The public key in compressed or uncompressed form.
+         */
+        publicKey: string;
+    }
+}

types/create-xpub/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "create-xpub-tests.ts"
+    ]
+}

types/create-xpub/tslint.json

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+{ "extends": "dtslint/dt.json" }