Initial

.gitignore

+node_modules/
+lib/

LICENSE.md

+
+The MIT License (MIT)
+=====================
+
+Copyright © 2018 Steemit Inc.
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the “Software”), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

Makefile

+
+SHELL := /bin/bash
+PATH  := ./node_modules/.bin:$(PATH)
+
+SRC_FILES := $(shell find src -name '*.ts')
+
+all: lib
+
+lib: $(SRC_FILES) node_modules tsconfig.json
+	tsc -p tsconfig.json --outDir lib
+	touch lib
+
+.PHONY: lint
+lint: node_modules
+	NODE_ENV=test tslint -p tsconfig.json -c tslint.json -t stylish --fix
+
+node_modules:
+	yarn install --non-interactive --frozen-lockfile
+
+.PHONY: clean
+clean:
+	rm -rf lib/
+
+.PHONY: distclean
+distclean: clean
+	rm -rf node_modules/

package.json

+{
+  "name": "steem-uri",
+  "version": "0.1.0",
+  "description": "Steem URI parser and encoder",
+  "license": "MIT",
+  "main": "./lib/index",
+  "typings": "./lib/index",
+  "scripts": {
+    "prepublish": "make lib"
+  },
+  "files": [
+    "lib/*"
+  ],
+  "devDependencies": {
+    "@types/node": "^10.0.9",
+    "dsteem": "^0.8.7",
+    "tslint": "^5.10.0",
+    "typescript": "^2.8.3"
+  }
+}

src/index.ts

+/**
+ * Steem URI Signing Protocol
+ * @author Johan Nordberg <johan@steemit.com>
+ */
+
+// Only used for typings, no code is pulled in.
+import {Operation, Transaction} from 'dsteem'
+
+// Assumes node.js if any of the utils needed are missing.
+if (typeof URL === 'undefined') {
+    global['URL'] = require('url').URL
+}
+if (typeof URLSearchParams === 'undefined') {
+    global['URLSearchParams'] = require('url').URLSearchParams
+}
+if (typeof btoa === 'undefined') {
+    global['btoa'] = (str) => new Buffer(str, 'binary').toString('base64')
+}
+if (typeof atob === 'undefined') {
+    global['atob'] = (str) => new Buffer(str, 'base64').toString('binary')
+}
+
+/// URL-safe Base64 encoding and decoding.
+const B64U_LOOKUP = {'/': '_', '_': '/', '+': '-', '-': '+', '=': '.', '.': '='}
+const b64uEnc = (str) => btoa(str).replace(/(\+|\/|=)/g, (m) => B64U_LOOKUP[m])
+const b64uDec = (str) => atob(str.replace(/(-|_|\.)/g, (m) => B64U_LOOKUP[m]))
+
+/**
+ * Protocol parameters.
+ */
+export interface Parameters {
+    /** Requested signer. */
+    signer?: string
+    /** Redurect uri. */
+    callback?: string
+    /** Whether to just sign the transaction. */
+    no_broadcast?: boolean
+}
+
+/**
+ * A transactions that may contain placeholders.
+ */
+export interface UnresolvedTransaction extends Transaction {
+    ref_block_num: any
+    ref_block_prefix: any
+    expiration: any
+    operations: any[]
+}
+
+/**
+ * Parsing result.
+ */
+export interface ParsingResult {
+    /**
+     * Decoded transaction. May have placeholders, use {@link resolve} to
+     * resolve them into a signable transaction.
+     */
+    tx: UnresolvedTransaction
+    /**
+     * Decoded protocol parameters.
+     */
+    params: Parameters
+}
+
+/**
+ * Parse a steem:// protocol link.
+ * @param steemUrl The `steem:` url to parse.
+ * @throws If the url can not be parsed.
+ * @returns The resolved transaction and parameters.
+ */
+export function parse(steemUrl: string): ParsingResult {
+    const url = new URL(steemUrl)
+    if (url.protocol !== 'steem:') {
+        throw new Error(`Invalid protocol, expected 'steem:' got '${ url.protocol }'`)
+    }
+    if (url.host !== 'sign') {
+        throw new Error(`Invalid action, expected 'sign' got '${ url.host }'`)
+    }
+    const [type, rawPayload] = url.pathname.split('/').slice(1)
+    let payload: any
+    try {
+        payload = JSON.parse(b64uDec(rawPayload))
+    } catch (error) {
+        error.message = `Invalid payload: ${ error.message }`
+        throw error
+    }
+    let tx: UnresolvedTransaction
+    switch (type) {
+        case 'tx':
+            tx = payload
+            break
+        case 'op':
+        case 'ops':
+            const operations: any[] = type === 'ops' ? payload : [payload]
+            tx = {
+                ref_block_num: '__ref_block_num',
+                ref_block_prefix: '__ref_block_prefix',
+                expiration: '__expiration',
+                extensions: [],
+                operations,
+            }
+            break
+        // case 'transfer':
+        // case 'follow':
+        default:
+            throw new Error(`Invalid signing action '${ type }'`)
+    }
+    const params: Parameters = {}
+    if (url.searchParams.has('cb')) {
+        params.callback = b64uDec(url.searchParams.get('cb')!)
+    }
+    if (url.searchParams.has('nb')) {
+        params.no_broadcast = true
+    }
+    if (url.searchParams.has('s')) {
+        params.signer = url.searchParams.get('s')!
+    }
+    return {tx, params}
+}
+
+/**
+ * Transaction resolving options.
+ */
+export interface ResolveOptions {
+    /** The ref block number used to fill in the `__ref_block_num` placeholder. */
+    ref_block_num: number
+    /** The ref block prefix used to fill in the `__ref_block_prefix` placeholder. */
+    ref_block_prefix: number
+    /** The date string used to fill in the `__expiration` placeholder. */
+    expiration: string,
+    /** List of account names avialable as signers. */
+    signers: string[]
+    /** Preferred signer if none is explicitly set in params. */
+    preferred_signer: string
+}
+
+const RESOLVE_PATTERN = /(__(ref_block_(num|prefix)|expiration|signer))/g
+
+/**
+ * Resolves placeholders in a transaction.
+ * @param tx Unresolved transaction data.
+ * @param params Protocol parameters.
+ * @param options Values to use when resolving.
+ * @returns The resolved transaction.
+ */
+export function resolveTransaction(tx: UnresolvedTransaction, params: Parameters, options: ResolveOptions) {
+    const signer = params.signer || options.preferred_signer
+    if (!options.signers.includes(signer)) {
+        throw new Error(`Signer '${ signer }' not available`)
+    }
+    const ctx = {
+        __ref_block_num: options.ref_block_num,
+        __ref_block_prefix: options.ref_block_prefix,
+        __expiration: options.expiration,
+        __signer: signer,
+    }
+    const walk = (val: any) => {
+        let type: string = typeof val
+        if (type === 'object' && Array.isArray(val)) {
+            type = 'array'
+        } else if (val === null) {
+            type = 'null'
+        }
+        switch (type) {
+            case 'string':
+                return val.replace(RESOLVE_PATTERN, (m) => ctx[m])
+            case 'array':
+                return val.map(walk)
+            case 'object': {
+                const rv: any = {}
+                for (const [k, v] of Object.entries(val)) {
+                    rv[k] = walk(v)
+                }
+                return rv
+            }
+            default:
+                return val
+        }
+    }
+    return walk(tx) as Transaction
+}
+
+/**
+ * Transaction confirmation including signature.
+ */
+export interface TransactionConfirmation {
+    /** Transaction signature. */
+    sig: string
+    /** Transaction hash. */
+    id?: string
+    /** Block number transaction was included in. */
+    block?: number
+    /** Transaction index in block. */
+    txn?: number
+}
+
+const CALLBACK_RESOLVE_PATTERN = /({{(sig|id|block|txn)}})/g
+
+/**
+ * Resolves template vars in a callback url.
+ * @param url The callback url.
+ * @param ctx Values to use when resolving.
+ * @returns The resolved url.
+ */
+export function resolveCallback(url: string, ctx: TransactionConfirmation) {
+    return url.replace(CALLBACK_RESOLVE_PATTERN, (_1, _2, m) => ctx[m] || '')
+}
+
+/*** Internal helper to encode Parameters to a querystring. */
+function encodeParameters(params: Parameters) {
+    const out = new URLSearchParams()
+    if (params.no_broadcast === true) {
+        out.set('nb', '')
+    }
+    if (params.signer) {
+        out.set('s', params.signer)
+    }
+    if (params.callback) {
+        out.set('cb', b64uEnc(params.callback))
+    }
+    let qs = out.toString()
+    if (qs.length > 0) {
+        qs = '?' + qs
+    }
+    return qs
+}
+
+/** Internal helper to encode a tx or op to a b64u+json payload. */
+function encodeJson(data: any) {
+    return b64uEnc(JSON.stringify(data, null, 0))
+}
+
+/** Encodes a Steem transaction to a steem: URI. */
+export function encodeTx(tx: Transaction, params: Parameters = {}) {
+    return `steem://sign/tx/${ encodeJson(tx) }${ encodeParameters(params) }`
+}
+
+/** Encodes a Steem operation to a steem: URI. */
+export function encodeOp(op: Operation, params: Parameters = {}) {
+    return `steem://sign/op/${ encodeJson(op) }${ encodeParameters(params) }`
+}
+
+/** Encodes several Steem operations to a steem: URI. */
+export function encodeOps(ops: Operation, params: Parameters = {}) {
+    return `steem://sign/ops/${ encodeJson(ops) }${ encodeParameters(params) }`
+}

tsconfig.json

+{
+  "compilerOptions": {
+    "declaration": true,
+    "lib": ["esnext", "dom"],
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noImplicitThis": true,
+    "outDir": "lib",
+    "strictNullChecks": true,
+    "target": "es5"
+  },
+  "include": [
+    "src/**/*.ts"
+  ]
+}
\ No newline at end of file

tslint.json

+{
+  "defaultSeverity": "error",
+  "extends": ["tslint:recommended"],
+  "rules": {
+    "indent": [true, "spaces", 4],
+    "interface-name": [true, "never-prefix"],
+    "max-classes-per-file": false,
+    "no-string-literal": false,
+    "no-var-requires": false,
+    "object-literal-sort-keys": false,
+    "quotemark": [true, "single", "avoid-escape"],
+    "semicolon": [true, "never"],
+    "triple-equals": [true, "allow-null-check"]
+  }
+}
\ No newline at end of file

yarn.lock

+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/node@^10.0.9":
+  version "10.0.9"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.0.9.tgz#7cb73a6ef9cf4e41e5354e114e824bfdfd96a6b4"
+
+ansi-regex@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
+
+ansi-styles@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
+
+ansi-styles@^3.2.1:
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+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  dependencies:
+    color-convert "^1.9.0"
+
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+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
+  dependencies:
+    sprintf-js "~1.0.2"
+
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+  resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
+
+babel-code-frame@^6.22.0:
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+  resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
+  dependencies:
+    chalk "^1.1.3"
+    esutils "^2.0.2"
+    js-tokens "^3.0.2"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+
+base-x@^3.0.2:
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+  resolved "https://registry.yarnpkg.com/base-x/-/base-x-3.0.4.tgz#94c1788736da065edb1d68808869e357c977fa77"
+  dependencies:
+    safe-buffer "^5.0.1"
+
+bindings@^1.2.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.3.0.tgz#b346f6ecf6a95f5a815c5839fc7cdb22502f1ed7"
+
+bip66@^1.1.3:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/bip66/-/bip66-1.1.5.tgz#01fa8748785ca70955d5011217d1b3139969ca22"
+  dependencies:
+    safe-buffer "^5.0.1"
+
+bn.js@^4.11.3, bn.js@^4.4.0:
+  version "4.11.8"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
+
+brace-expansion@^1.1.7:
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+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+brorand@^1.0.1:
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+  resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
+
+browserify-aes@^1.0.6:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.2.0.tgz#326734642f403dabc3003209853bb70ad428ef48"
+  dependencies:
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+    cipher-base "^1.0.0"
+    create-hash "^1.1.0"
+    evp_bytestokey "^1.0.3"
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+bs58@^4.0.1:
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+  resolved "https://registry.yarnpkg.com/bs58/-/bs58-4.0.1.tgz#be161e76c354f6f788ae4071f63f34e8c4f0a42a"
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+    base-x "^3.0.2"
+
+buffer-xor@^1.0.3:
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+  resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
+
+builtin-modules@^1.1.1:
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+  resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
+
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+    long "~3"
+
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+    strip-ansi "^3.0.0"
+    supports-color "^2.0.0"
+
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+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
+  dependencies:
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+    supports-color "^5.3.0"
+
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+    safe-buffer "^5.0.1"
+
+color-convert@^1.9.0:
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+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.1.tgz#c1261107aeb2f294ebffec9ed9ecad529a6097ed"
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+
+color-name@^1.1.1:
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+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+
+commander@^2.12.1:
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+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
+
+concat-map@0.0.1:
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+
+core-js@^2.5.0:
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+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+
+create-hash@^1.1.0, create-hash@^1.1.2:
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+  resolved "https://registry.yarnpkg.com/create-hash/-/create-hash-1.2.0.tgz#889078af11a63756bcfb59bd221996be3a9ef196"
+  dependencies:
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+    inherits "^2.0.1"
+    md5.js "^1.3.4"
+    ripemd160 "^2.0.1"
+    sha.js "^2.4.0"
+
+create-hmac@^1.1.4:
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+  resolved "https://registry.yarnpkg.com/create-hmac/-/create-hmac-1.1.7.tgz#69170c78b3ab957147b2b8b04572e47ead2243ff"
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+    ripemd160 "^2.0.0"
+    safe-buffer "^5.0.1"
+    sha.js "^2.4.8"
+
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+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+
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+  resolved "https://registry.yarnpkg.com/drbg.js/-/drbg.js-1.0.1.tgz#3e36b6c42b37043823cdbc332d58f31e2445480b"
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+    create-hash "^1.1.2"
+    create-hmac "^1.1.4"
+
+dsteem@^0.8.7:
+  version "0.8.7"
+  resolved "https://registry.yarnpkg.com/dsteem/-/dsteem-0.8.7.tgz#71160fd3dc70b404bb24c17b88cfaef6676c5c7e"
+  dependencies:
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+    bytebuffer "^5.0.1"
+    core-js "^2.5.0"
+    node-fetch "^2.0.0-alpha.9"
+    secp256k1 "^3.3.1"
+    verror "^1.10.0"
+    whatwg-fetch "^2.0.3"
+
+elliptic@^6.2.3:
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+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
+  dependencies:
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+    brorand "^1.0.1"
+    hash.js "^1.0.0"
+    hmac-drbg "^1.0.0"
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+    minimalistic-crypto-utils "^1.0.0"
+
+escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
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+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+
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+
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+  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
+
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+  resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"
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+    safe-buffer "^5.1.1"
+
+extsprintf@^1.2.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+
+glob@^7.1.1:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+has-ansi@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
+  dependencies:
+    ansi-regex "^2.0.0"
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+
+hash-base@^3.0.0:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.0.4.tgz#5fc8686847ecd73499403319a6b0a3f3f6ae4918"
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+hash.js@^1.0.0, hash.js@^1.0.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.3.tgz#340dedbe6290187151c1ea1d777a3448935df846"
+  dependencies:
+    inherits "^2.0.3"
+    minimalistic-assert "^1.0.0"
+
+hmac-drbg@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
+  dependencies:
+    hash.js "^1.0.3"
+    minimalistic-assert "^1.0.0"
+    minimalistic-crypto-utils "^1.0.1"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2, inherits@^2.0.1, inherits@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+
+js-tokens@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
+
+js-yaml@^3.7.0:
+  version "3.11.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
+long@~3:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/long/-/long-3.2.0.tgz#d821b7138ca1cb581c172990ef14db200b5c474b"
+
+md5.js@^1.3.4:
+  version "1.3.4"
+  resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.4.tgz#e9bdbde94a20a5ac18b04340fc5764d5b09d901d"
+  dependencies:
+    hash-base "^3.0.0"
+    inherits "^2.0.1"
+
+minimalistic-assert@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
+
+minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  dependencies:
+    brace-expansion "^1.1.7"
+
+nan@^2.2.1:
+  version "2.10.0"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.10.0.tgz#96d0cd610ebd58d4b4de9cc0c6828cda99c7548f"
+
+node-fetch@^2.0.0-alpha.9:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.1.2.tgz#ab884e8e7e57e38a944753cec706f788d1768bb5"
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  dependencies:
+    wrappy "1"
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+
+path-parse@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.5.tgz#3c1adf871ea9cd6c9431b6ea2bd74a0ff055c4c1"
+
+resolve@^1.3.2:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.7.1.tgz#aadd656374fd298aee895bc026b8297418677fd3"
+  dependencies:
+    path-parse "^1.0.5"
+
+ripemd160@^2.0.0, ripemd160@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-2.0.2.tgz#a1c1a6f624751577ba5d07914cbc92850585890c"
+  dependencies:
+    hash-base "^3.0.0"
+    inherits "^2.0.1"
+
+safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+
+secp256k1@^3.3.1:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.5.0.tgz#677d3b8a8e04e1a5fa381a1ae437c54207b738d0"
+  dependencies:
+    bindings "^1.2.1"
+    bip66 "^1.1.3"
+    bn.js "^4.11.3"
+    create-hash "^1.1.2"
+    drbg.js "^1.0.1"
+    elliptic "^6.2.3"
+    nan "^2.2.1"
+    safe-buffer "^5.1.0"
+
+semver@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
+
+sha.js@^2.4.0, sha.js@^2.4.8:
+  version "2.4.11"
+  resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.11.tgz#37a5cf0b81ecbc6943de109ba2960d1b26584ae7"
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+sprintf-js@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+
+strip-ansi@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
+  dependencies:
+    ansi-regex "^2.0.0"
+
+supports-color@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
+
+supports-color@^5.3.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+  dependencies:
+    has-flag "^3.0.0"
+
+tslib@^1.8.0, tslib@^1.8.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.1.tgz#a5d1f0532a49221c87755cfcc89ca37197242ba7"
+
+tslint@^5.10.0:
+  version "5.10.0"
+  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.10.0.tgz#11e26bccb88afa02dd0d9956cae3d4540b5f54c3"
+  dependencies:
+    babel-code-frame "^6.22.0"
+    builtin-modules "^1.1.1"
+    chalk "^2.3.0"
+    commander "^2.12.1"
+    diff "^3.2.0"
+    glob "^7.1.1"
+    js-yaml "^3.7.0"
+    minimatch "^3.0.4"
+    resolve "^1.3.2"
+    semver "^5.3.0"
+    tslib "^1.8.0"
+    tsutils "^2.12.1"
+
+tsutils@^2.12.1:
+  version "2.27.0"
+  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-2.27.0.tgz#9efb252b188eaa0ca3ade41dc410d6ce7eaab816"
+  dependencies:
+    tslib "^1.8.1"
+
+typescript@^2.8.3:
+  version "2.8.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.3.tgz#5d817f9b6f31bb871835f4edf0089f21abe6c170"
+
+verror@^1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
+  dependencies:
+    assert-plus "^1.0.0"
+    core-util-is "1.0.2"
+    extsprintf "^1.2.0"
+
+whatwg-fetch@^2.0.3:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"