Commit js, ts, and definitions in separate folders

ts_src/payments/p2pk.ts

@@ -0,0 +1,78 @@
+import { Payment, PaymentOpts } from './index' // eslint-disable-line
+import * as bscript from '../script'
+import * as lazy from './lazy'
+import { bitcoin as BITCOIN_NETWORK } from '../networks'
+const typef = require('typeforce')
+const OPS = bscript.OPS
+const ecc = require('tiny-secp256k1')
+
+// input: {signature}
+// output: {pubKey} OP_CHECKSIG
+export function p2pk (a: Payment, opts?: PaymentOpts): Payment {
+  if (
+    !a.input &&
+    !a.output &&
+    !a.pubkey &&
+    !a.input &&
+    !a.signature
+  ) throw new TypeError('Not enough data')
+  opts = Object.assign({ validate: true }, opts || {})
+
+  typef({
+    network: typef.maybe(typef.Object),
+    output: typef.maybe(typef.Buffer),
+    pubkey: typef.maybe(ecc.isPoint),
+
+    signature: typef.maybe(bscript.isCanonicalScriptSignature),
+    input: typef.maybe(typef.Buffer)
+  }, a)
+
+  const _chunks = <()=>Array<Buffer | number>>lazy.value(function () { return bscript.decompile(<Buffer>a.input) })
+
+  const network = a.network || BITCOIN_NETWORK
+  const o: Payment = { network }
+
+  lazy.prop(o, 'output', function () {
+    if (!a.pubkey) return
+    return bscript.compile([
+      a.pubkey,
+      OPS.OP_CHECKSIG
+    ])
+  })
+  lazy.prop(o, 'pubkey', function () {
+    if (!a.output) return
+    return a.output.slice(1, -1)
+  })
+  lazy.prop(o, 'signature', function () {
+    if (!a.input) return
+    return <Buffer>_chunks()[0]
+  })
+  lazy.prop(o, 'input', function () {
+    if (!a.signature) return
+    return bscript.compile([a.signature])
+  })
+  lazy.prop(o, 'witness', function () {
+    if (!o.input) return
+    return []
+  })
+
+  // extended validation
+  if (opts.validate) {
+    if (a.output) {
+      if (a.output[a.output.length - 1] !== OPS.OP_CHECKSIG) throw new TypeError('Output is invalid')
+      if (!ecc.isPoint(o.pubkey)) throw new TypeError('Output pubkey is invalid')
+      if (a.pubkey && !a.pubkey.equals(<Buffer>o.pubkey)) throw new TypeError('Pubkey mismatch')
+    }
+
+    if (a.signature) {
+      if (a.input && !a.input.equals(<Buffer>o.input)) throw new TypeError('Signature mismatch')
+    }
+
+    if (a.input) {
+      if (_chunks().length !== 1) throw new TypeError('Input is invalid')
+      if (!bscript.isCanonicalScriptSignature(<Buffer>o.signature)) throw new TypeError('Input has invalid signature')
+    }
+  }
+
+  return Object.assign(o, a)
+}