bitcoinjs-lib/ts_src/templates/pubkey/output.ts

// {pubKey} OP_CHECKSIG

import * as bscript from '../../script';
import { OPS } from '../../script';

export function check(script: Buffer | Array<number | Buffer>): boolean {
  const chunks = <Array<number | Buffer>>bscript.decompile(script);

  return (
    chunks.length === 2 &&
    bscript.isCanonicalPubKey(<Buffer>chunks[0]) &&
    chunks[1] === OPS.OP_CHECKSIG
  );
}
check.toJSON = function() {
  return 'pubKey output';
};