chore: remove support for Node.js v12

Author: davidmurdoch

.github/workflows/pr.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [12.0.0, 12.x, 14.x, 16.x, 18.x]
+        node: [14.0.0, 14.x, 16.x, 18.x]
         os: [windows-2019, ubuntu-18.04, ubuntu-20.04, macos-11]
         exclude:
           # Node v18 does not run on ubuntu-18.04: https://github.com/nodejs/node/issues/42351#issuecomment-1068424442

.github/workflows/push.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [12.0.0, 12.x, 14.x, 16.x, 18.x]
+        node: [14.0.0, 14.x, 16.x, 18.x]
         os: [ubuntu-20.04]
 
     runs-on: ${{ matrix.os }}

.nvmrc

@@ -1 +1 @@
-v12.0.0
+v14.0.0

CONTRIBUTING.md

@@ -2,11 +2,11 @@
 
 ## Getting set up
 
-- Use Node.js v12.0.0.
-  - Why v12.0.0? Because this is the first LTS release of Node.js v12 and is the earliest version Ganache supports.
+- Use Node.js v14.0.0.
+  - Why v14.0.0? Because this is the first LTS release of Node.js v14 and is the earliest version Ganache supports.
   - recommendation: use [nvm](https://github.com/nvm-sh/nvm) on Linux and macOS, and [nvm-windows](https://github.com/coreybutler/nvm-windows) on
     Windows, to configure your node version.
-    - On Linux and macOS, if you have `nvm` installed, just run `nvm use` to switch to Node.js v12.0.0.
+    - On Linux and macOS, if you have `nvm` installed, just run `nvm use` to switch to Node.js v14.0.0.
 - `git clone [email protected]:trufflesuite/ganache.git`
 - `cd ganache`
 - `npm install` (use npm v6)
@@ -153,7 +153,7 @@ index 2a2aa9e..57cbf21 100644
 
 These are guidelines, not rules. :-)
 
-- Use Node.js v12.0.0 for most local development.
+- Use Node.js v14.0.0 for most local development.
 - Use `bigint` literals, e.g., `123n`; if the number is externally configurable and/or could exceed
   `Number.MAX_SAFE_INTEGER`.
 - Write tests.

package.json

@@ -3,7 +3,7 @@
   "author": "David Murdoch <[email protected]> (https://davidmurdoch.com)",
   "private": true,
   "engines": {
-    "node": ">=12.0.0",
+    "node": ">=14.0.0",
     "npm": ">=6.12.0"
   },
   "scripts": {

src/packages/ganache/README.md

@@ -47,7 +47,7 @@ Ganache can be used from the [command line](#command-line-use), [programmaticall
 
 ### Command line use
 
-You must first install [Node.js](https://nodejs.org/) >= v12.0.0 and npm >= 6.12.0.
+You must first install [Node.js](https://nodejs.org/) >= v14.0.0 and npm >= 6.12.0.
 
 To install Ganache globally, run: