Fmt, comments and minor rewording

docs/development.md

@@ -178,7 +178,8 @@ zk test db
   zk run loadtest # Has to be run in the 3rd terminal
   ```
 
-  **Note**. If you have compilation issues with `sqlx`, then make sure to run `zk up` before running the tests.
+  **Note**. If you have compilation issues with `sqlx`, then make sure to run `zk up` before running the tests. Also, if
+  you see some tests fail, might need to call `zk db reset` and restart the tests.
 
 ## Developing circuit
 

docs/launch.md

@@ -18,7 +18,8 @@ zk init
 During the first initialization you have to download around 8 GB of setup files, this should be done once. If you have a
 problem on this step of the initialization, see help for the `zk run plonk-setup` command.
 
-If you any other problems with the `zk init` command, go to the `Troubleshooting` section at the end of this file. There are solutions for some common error cases.
+If you any other problems with the `zk init` command, go to the `Troubleshooting` section at the end of this file. There
+are solutions for some common error cases.
 
 To completely reset the dev environment:
 
@@ -93,18 +94,22 @@ output.
 ## Troubleshooting
 
 ### Invalid mount config for type "bind"
+
 **Problem.** `zk init` failes with the following error:
+
 ```sh
 Cannot create container for service geth: invalid mount config for type "bind": bind source path does not exist: /home/stanislav/matter-labs/zksync-dev/volumes/geth
-``` 
+```
 
 You might also see these errors not only for geth, but also for `postgres` and `tesseracts`.
 
-**Solution**. In the repository folder there should be a folder `volumes`, with three folders inside of it: `geth`, `tesseracts`, `postgres`. If some of these are missing, you must create them on your own.
+**Solution**. In the repository folder there should be a folder `volumes`, with three folders inside of it: `geth`,
+`tesseracts`, `postgres`. If some of these are missing, you must create them on your own.
 
 ### SSL error: certificate verify failed
 
 **Problem**. `zk init` failes with the following error:
+
 ```sh
 Initializing download: https://universal-setup.ams3.digitaloceanspaces.com/setup_2%5E20.key
 SSL error: certificate verify failed
@@ -115,6 +120,7 @@ SSL error: certificate verify failed
 ### rmSync is not a function
 
 **Problem**. `zk init` failes with the following error:
+
 ```sh
 fs_1.default.rmSync is not a function
 ```

docs/setup-dev.md

@@ -36,8 +36,9 @@ If logging out does not help, restarting the computer should.
 
 ## `Node` & `Yarn`
 
-1. Install `node` (requires version 14.14.0 or higher).
-Since our team tries to always use the latest LTS version of `node.js`, we suggest you to install [nvm](https://github.com/nvm-sh/nvm). It will allow you to update the node version quickly in the future.
+1. Install `Node` (requires version 14.14.0 or higher). Since our team attempts to always use the latest LTS version of
+   `Node.js`, we suggest you to install [nvm](https://github.com/nvm-sh/nvm). It will allow you to update `Node.js`
+   version easily in the future.
 
 2. Install `yarn`. Instructions can be found on the [official site](https://classic.yarnpkg.com/en/docs/install/).
 
@@ -47,7 +48,9 @@ Check if yarn is installed by running the following command:
 $ yarn -v
 ```
 
-If you face any problems when installing `yarn`, it might be the case that your package manager installed the wrong package. Make sure to thoroughly follow the instructions above on the official website. It has a lot of troubleshooting guides in it. 
+If you face any problems when installing `yarn`, it might be the case that your package manager installed the wrong
+package. Make sure to thoroughly follow the instructions above on the official website. It has a lot of troubleshooting
+guides in it.
 
 3. Run `yarn global add @vue/cli-service`
 
@@ -143,18 +146,27 @@ Also, we need [`sqlx`](https://github.com/launchbadge/sqlx) CLI (it is used to g
 cargo install --version=0.2.0 sqlx-cli
 ```
 
-If you face an error `Could not find directory of OpenSSL installation`, then you should do the following. The instruction is targeted on debian-based Linux, but generally the steps are similar for all OS.
+If you face an error `Could not find directory of OpenSSL installation`, then you should do the following. The
+instruction is targeted on debian-based Linux, but generally the steps are similar for all OS.
 
 - Install `libssl-dev`:
+
 ```sh
 sudo apt install libssl-dev
 ```
-- Install OpenSSL. Here is [the instruction for Ubuntu](https://www.notion.so/matterlabs/Setup-checklist-056a2e5c3a104608a5a25788520ef0ff#5f34729bdffe496f9d38c46787c640d7), but the steps should be similar for the debian-based Linux distros.
-- Add `OPENSSL_DIR` variable to your environment. This would typically be `/usr/local/ssl`. You can do this by adding the following line to your shell profile file (e.g. `~/.bash_profile`):
+
+- Install OpenSSL. Here is
+  [the instruction for Ubuntu](https://www.notion.so/matterlabs/Setup-checklist-056a2e5c3a104608a5a25788520ef0ff#5f34729bdffe496f9d38c46787c640d7),
+  but the steps should be similar for the debian-based Linux distros.
+- Add `OPENSSL_DIR` variable to your environment. This would typically be `/usr/local/ssl`. You can do this by adding
+  the following line to your shell profile file (e.g. `~/.bash_profile`):
+
 ```sh
 export OPENSSL_DIR=/usr/local/ssl
 ```
+
 - Install `package-config`:
+
 ```sh
 sudo apt-get install -y pkg-config
 ```

infrastructure/zk/src/init.ts

@@ -33,6 +33,8 @@ async function checkEnv() {
     }
     await utils.exec('cargo sqlx --version');
     const { stdout: version } = await utils.exec('node --version');
+    // Node v.14.14 is required because
+    // the `fs.rmSync` function was added in v14.14.0
     if ('v14.14' >= version) {
         throw new Error('Error, node.js version 14.14.0 or higher is required');
     }