perf: stream bundled OpenAPI file instead of sending it wholesale (#361)

* perf: stream bundled OpenAPI file instead of sending it wholesale

* chore: update default host URL

config/default.js

@@ -1,6 +1,6 @@
 module.exports = {
   // eslint-disable-next-line global-require
   cli: require('../package.json').name,
-  host: 'https://dash.readme.io',
+  host: 'https://dash.readme.com',
   hub: 'https://{project}.readme.io',
 };

package.json

@@ -51,7 +51,8 @@
     "parse-link-header": "^1.0.1",
     "read": "^1.0.7",
     "semver": "^7.0.0",
-    "table-layout": "^1.0.0"
+    "table-layout": "^1.0.0",
+    "tmp-promise": "^3.0.2"
   },
   "devDependencies": {
     "@readme/eslint-config": "^6.0.0",

src/cmds/openapi.js

@@ -10,6 +10,7 @@ const { getProjectVersion } = require('../lib/versionSelect');
 const fetch = require('node-fetch');
 const FormData = require('form-data');
 const parse = require('parse-link-header');
+const { file: tmpFile } = require('tmp-promise');
 
 exports.command = 'openapi';
 exports.usage = 'openapi [file] [options]';
@@ -117,8 +118,14 @@ exports.run = async function (opts) {
         return Promise.reject(err);
       });
 
+    // Create a temporary file to write the bundled spec to,
+    // which we will then stream into the form data body
+    const { path } = await tmpFile({ prefix: 'rdme-openapi-', postfix: '.json' });
+    await fs.writeFileSync(path, bundledSpec);
+    const stream = fs.createReadStream(path);
+
     const formData = new FormData();
-    formData.append('spec', bundledSpec);
+    formData.append('spec', stream);
 
     const options = {
       headers: cleanHeaders(key, {