feat: replace Node.js 18 with Node.js 20 (#1920)

* feat: replace Node.js 18 with Node.js 20

* fix: close connection to fix keep-alive behavior in node.js 20

* Bump hardhat

* Bump node

* fix: update docs links

docs.api3.org -> airnode-docs.api3.org

Author: dcroote

.changeset/tough-sloths-hammer.md

@@ -0,0 +1,9 @@
+---
+'@api3/airnode-utilities': minor
+'@api3/airnode-deployer': minor
+'@api3/airnode-examples': minor
+'@api3/airnode-admin': minor
+'@api3/airnode-node': minor
+---
+
+Replace Node.js 18 with Node.js 20

.github/workflows/build-test.yml

@@ -9,7 +9,7 @@ on:
 
 env:
   DOCKER_BUILDKIT: 1
-  TARGET_NODE_VERSION: '18.19.1'
+  TARGET_NODE_VERSION: '20.17.0'
 
 jobs:
   documentation:

.github/workflows/protocol-verify.yml

@@ -11,7 +11,7 @@ on:
 
 env:
   DOCKER_BUILDKIT: 1
-  TARGET_NODE_VERSION: '18.19.1'
+  TARGET_NODE_VERSION: '20.17.0'
 
 jobs:
   pre-build:

README.md

@@ -9,7 +9,8 @@ Airnode is a fully-serverless oracle node that is designed specifically for API
 
 ## Documentation
 
-You can find an overview of Airnode in the [documentation](https://docs.api3.org/explore/airnode/what-is-airnode.html).
+You can find an overview of Airnode in the
+[documentation](https://airnode-docs.api3.org/reference/airnode/latest/understand/).
 
 ## For developers
 
@@ -19,11 +20,11 @@ This is a monorepo managed by [Lerna](https://github.com/lerna/lerna).
 
 [**airnode-abi**:](https://github.com/api3dao/airnode/tree/master/packages/airnode-abi) Encoding and decoding utilities
 for Airnode according to the
-[Airnode ABI specifications](https://docs.api3.org/reference/airnode/latest/specifications/airnode-abi.html)
+[Airnode ABI specifications](https://airnode-docs.api3.org/reference/airnode/latest/specifications/airnode-abi.html)
 
 [**airnode-adapter**:](https://github.com/api3dao/airnode/tree/master/packages/airnode-adapter) Used for building
-requests from an [Oracle Integration Specification (OIS)](https://docs.api3.org/reference/ois/latest/), executing them,
-parsing the responses, but also converting and encoding them for on chain purposes
+requests from an [Oracle Integration Specification (OIS)](https://airnode-docs.api3.org/reference/ois/latest/),
+executing them, parsing the responses, but also converting and encoding them for on chain purposes
 
 [**airnode-admin**:](https://github.com/api3dao/airnode/tree/master/packages/airnode-admin) A package/CLI tool to
 interact with the Airnode contracts across chains

docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:18.19.1-alpine3.19 AS environment
+FROM node:20.17.0-alpine3.20 AS environment
 
 ENV appDir="/app" \
     buildDir="/build" \

package.json

@@ -4,7 +4,7 @@
   "version": "0.1.0",
   "private": true,
   "engines": {
-    "node": "^18.19.1"
+    "node": "^20.17.0"
   },
   "repository": {
     "type": "git",
@@ -110,7 +110,7 @@
     "@changesets/cli": "^2.27.1",
     "@octokit/core": "^5.2.0",
     "@types/libsodium-wrappers": "^0.7.14",
-    "@types/node": "^18.19.31",
+    "@types/node": "^20.17.0",
     "@typescript-eslint/eslint-plugin": "^7.8.0",
     "@typescript-eslint/parser": "^7.8.0",
     "@vercel/ncc": "^0.38.1",

packages/airnode-abi/README.md

@@ -1,7 +1,7 @@
 # `@api3/airnode-abi`
 
 > Encoding and decoding utilities for Airnode according to the
-> [Airnode ABI specifications](https://docs.api3.org/reference/airnode/latest/specifications/airnode-abi.html)
+> [Airnode ABI specifications](https://airnode-docs.api3.org/reference/airnode/latest/specifications/airnode-abi.html)
 
 ## Documentation
 
@@ -11,5 +11,5 @@ then grouped and encoded as the rest of the body.
 
 For more information see the API3 Documentation.
 
-- [Airnode ABI Reference](https://docs.api3.org/reference/airnode/latest/packages/airnode-abi.html)
-- [Airnode ABI Specifications](https://docs.api3.org/reference/airnode/latest/specifications/airnode-abi.html)
+- [Airnode ABI Reference](https://airnode-docs.api3.org/reference/airnode/latest/packages/airnode-abi.html)
+- [Airnode ABI Specifications](https://airnode-docs.api3.org/reference/airnode/latest/specifications/airnode-abi.html)

packages/airnode-adapter/README.md

@@ -1,10 +1,10 @@
 # `@api3/airnode-adapter`
 
 > Used for building requests from an
-> [Oracle Integration Specification (OIS)](https://docs.api3.org/reference/ois/latest/), executing them, parsing the
-> responses, but also converting and encoding them for on chain purposes
+> [Oracle Integration Specification (OIS)](https://airnode-docs.api3.org/reference/ois/latest/), executing them, parsing
+> the responses, but also converting and encoding them for on chain purposes
 
 ## Documentation
 
 The adapter documentation describing relevant user facing parts can be found in
-[adapter docs](https://docs.api3.org/reference/airnode/latest/packages/adapter.html).
+[adapter docs](https://airnode-docs.api3.org/reference/airnode/latest/packages/adapter.html).

packages/airnode-adapter/package.json

@@ -34,7 +34,7 @@
     "@types/mocha": "^10.0.6",
     "chai": "^4.4.1",
     "ethereum-waffle": "^4.0.10",
-    "hardhat": "^2.14.1",
+    "hardhat": "^2.22.18",
     "jest": "^29.7.0",
     "rimraf": "^5.0.5",
     "ts-jest": "^29.1.2",

packages/airnode-admin/README.md

@@ -5,7 +5,7 @@
 ## Documentation
 
 You can find documentation on how to use the admin CLI package in the
-[admin CLI docs](https://docs.api3.org/reference/airnode/latest/packages/admin-cli.html).
+[admin CLI docs](https://airnode-docs.api3.org/reference/airnode/latest/packages/admin-cli.html).
 
 ## For developers