add readme and method to export json (#838)

moonbeam-types-bundle/.gitignore

@@ -1,2 +1,3 @@
 # ignore files generated by typescript
 dist/
+**.json

moonbeam-types-bundle/README.md

@@ -0,0 +1,30 @@
+# Moonbeam Types Bundle
+
+Exports npm package `moonbeam-types-bundle`, formated as per polkadot-js specification to use
+with the app or the api.
+
+## Exports
+
+```
+export const typesBundle = {
+  spec: {
+    moonbeam: moonbeamDefinitions,
+    moonbeamDefinitions,
+    moonbase: moonbeamDefinitions,
+    moonriver: moonbeamDefinitions,
+  },
+} as OverrideBundleType;
+```
+
+`typesBundle` is of type OverrideBundleType to associate runtime names with correct definitions
+
+`moonbeamDefinitions` is of types OverrideBundleDefinition and returns a different set of type for
+each runtime version.
+
+## Print Types
+
+To print and save types JSON for a specific version run:
+`ts-node generateJSON.ts <verison number>`
+
+To print and save the latest:
+`ts-node generateJSON.ts latest`

moonbeam-types-bundle/generateJSON.ts

@@ -0,0 +1,31 @@
+import { RegistryTypes } from "@polkadot/types/types";
+import fs from "fs";
+import { moonbeamDefinitions } from ".";
+
+async function generateJSON() {
+  const version = process.argv[2] || "latest";
+  let types: RegistryTypes;
+  if (!moonbeamDefinitions.types) {
+    throw new Error("missing types definitions");
+  } else if (version === "latest") {
+    types = moonbeamDefinitions.types[moonbeamDefinitions.types.length - 1].types;
+  } else if (Number(version)) {
+    let i = 0;
+    while (
+      i < moonbeamDefinitions.types.length &&
+      moonbeamDefinitions.types[i].minmax[1] &&
+      Number(moonbeamDefinitions.types[i].minmax[1]) < Number(version)
+    ) {
+      i += 1;
+    }
+    types = moonbeamDefinitions.types[i].types;
+  } else {
+    throw new Error("parameter must be number or `latest`");
+  }
+  console.log(JSON.stringify(types));
+  fs.appendFile("moonbeam-types-" + version + ".json", JSON.stringify(types), function (err) {
+    if (err) throw err;
+    console.log("Saved for version : " + version);
+  });
+}
+generateJSON();

moonbeam-types-bundle/index.ts

@@ -359,7 +359,7 @@ export const moonbeamDefinitions = {
       types: TYPES_155_199,
     },
     {
-      minmax: [199, 400],
+      minmax: [200, 399],
       types: TYPES_200_399,
     },
     {