Commit js, ts, and definitions in separate folders

src/payments/embed.js

@@ -0,0 +1,52 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const bscript = require("../script");
+const lazy = require("./lazy");
+const networks_1 = require("../networks");
+const typef = require('typeforce');
+const OPS = bscript.OPS;
+function stacksEqual(a, b) {
+    if (a.length !== b.length)
+        return false;
+    return a.every(function (x, i) {
+        return x.equals(b[i]);
+    });
+}
+// output: OP_RETURN ...
+function p2data(a, opts) {
+    if (!a.data &&
+        !a.output)
+        throw new TypeError('Not enough data');
+    opts = Object.assign({ validate: true }, opts || {});
+    typef({
+        network: typef.maybe(typef.Object),
+        output: typef.maybe(typef.Buffer),
+        data: typef.maybe(typef.arrayOf(typef.Buffer))
+    }, a);
+    const network = a.network || networks_1.bitcoin;
+    const o = { network };
+    lazy.prop(o, 'output', function () {
+        if (!a.data)
+            return;
+        return bscript.compile([OPS.OP_RETURN].concat(a.data));
+    });
+    lazy.prop(o, 'data', function () {
+        if (!a.output)
+            return;
+        return bscript.decompile(a.output).slice(1);
+    });
+    // extended validation
+    if (opts.validate) {
+        if (a.output) {
+            const chunks = bscript.decompile(a.output);
+            if (chunks[0] !== OPS.OP_RETURN)
+                throw new TypeError('Output is invalid');
+            if (!chunks.slice(1).every(typef.Buffer))
+                throw new TypeError('Output is invalid');
+            if (a.data && !stacksEqual(a.data, o.data))
+                throw new TypeError('Data mismatch');
+        }
+    }
+    return Object.assign(o, a);
+}
+exports.p2data = p2data;