feat: eslint 9 migration

BREAKING CHANGE: eslint 9 is now require
BREAKING CHANGE: typescript >= v4.7 is now required (when using typescript)

.github/actions/prepare/action.yml

@@ -5,7 +5,7 @@ inputs:
   node-version:
     required: false
     description: "`node-version` passed to `actions/setup-node`."
-    default: latest
+    default: "20"
 
 runs:
   using: "composite"

.github/workflows/release.yml

@@ -28,8 +28,6 @@ jobs:
     uses: ./.github/workflows/lint-markdown.yml
   lint_packages:
     uses: ./.github/workflows/lint-packages.yml
-  lint_prettier:
-    uses: ./.github/workflows/lint-prettier.yml
   lint_spelling:
     uses: ./.github/workflows/lint-spelling.yml
   test:
@@ -46,7 +44,6 @@ jobs:
       - lint_markdown
       - lint_spelling
       - lint_packages
-      - lint_prettier
       - test
       - type_check
     runs-on: ubuntu-latest

.github/workflows/test-js.yml

@@ -14,14 +14,13 @@ jobs:
         os:
           - "ubuntu-latest"
         node_version:
-          - "16"
-          - "18"
+          - "18.18"
           - "20"
           - "latest"
         ts_version:
           - "next"
           - "latest"
-          - "4.3.5"
+          - "4.7.4"
           # - "JS"
     runs-on: ${{ matrix.os }}
     continue-on-error: ${{ matrix.ts_version == 'next' }}

.lintstagedrc.yml

@@ -1,17 +1,16 @@
 "*.{json,yml}":
-  - prettier --ignore-unknown --write
+  - eslint --fix
   - cspell lint --no-progress --show-suggestions --show-context --no-must-find-files --dot
 
-"*.ts":
-  - prettier --ignore-unknown --write
+"*.?([cm])[jt]s?(x)":
   - eslint --fix
   - cspell lint --no-progress --show-suggestions --show-context --no-must-find-files --dot
   - tsc-files -p tsconfig.build.json --noEmit
 
 "*.md":
-  - prettier --ignore-unknown --write
-  - markdownlint --config=.markdownlint.json --ignore-path=.markdownlintignore
+  - markdownlint-cli2 --fix
+  - eslint --fix
   - cspell lint --no-progress --show-suggestions --show-context --no-must-find-files --dot
 
-"pnpm-lock.yaml":
+pnpm-lock.yaml:
   - "pnpm dedupe && :"

.markdownlint-cli2.jsonc

@@ -0,0 +1,6 @@
+{
+  "$schema": "node_modules/markdownlint-cli2/schema/markdownlint-cli2-config-schema.json",
+  "gitignore": true,
+  "globs": ["**/*.md"],
+  "ignores": ["node_modules", "coverage", "lib", "CHANGELOG.md"],
+}

.markdownlint.json

@@ -1,4 +1,6 @@
 {
+  "$schema": "node_modules/markdownlint-cli2/schema/markdownlint-config-schema.json",
+
   "default": false,
   "extends": "markdownlint/style/prettier",
 
@@ -62,9 +64,9 @@
   // MD013/line-length : Line length : https://github.com/DavidAnson/markdownlint/blob/v0.33.0/doc/md013.md
   "MD013": {
     // Number of characters
-    "line_length": 160,
+    "line_length": 120,
     // Number of characters for headings
-    "heading_line_length": 160,
+    "heading_line_length": 120,
     // Number of characters for code blocks
     "code_block_line_length": 120,
     // Include code blocks

.prettierrc.yml

@@ -2,7 +2,6 @@
 
 plugins:
   - prettier-plugin-packagejson
-  - prettier-plugin-multiline-arrays
 
 trailingComma: "all"
 

.vscode/settings.json

@@ -1,15 +1,24 @@
 {
   "editor.codeActionsOnSave": {
     "source.fixAll": "explicit",
-    "source.fixAll.eslint": "explicit",
-    "source.formatDocument": "explicit",
-    "source.organizeImports": "explicit",
-    "source.sortImports": "explicit"
+    "source.fixAll.eslint": "explicit"
   },
   "editor.defaultFormatter": "esbenp.prettier-vscode",
-  "editor.formatOnSave": true,
-  "editor.formatOnSaveMode": "file",
+  "editor.formatOnSave": false,
   "editor.rulers": [80],
+  "eslint.probe": [
+    "html",
+    "javascript",
+    "javascriptreact",
+    "json",
+    "jsonc",
+    "markdown",
+    "toml",
+    "typescript",
+    "typescriptreact",
+    "vue",
+    "yaml"
+  ],
   "files.associations": {
     ".markdownlint.json": "jsonc",
     ".markdownlintignore": "ignore"
@@ -29,6 +38,6 @@
   },
   "typescript.tsdk": "./node_modules/typescript/lib",
   "[markdown]": {
-    "editor.rulers": [160]
+    "editor.rulers": [120]
   }
 }

CONTRIBUTING.md

@@ -8,16 +8,24 @@ For new features file an issue. For bugs, file an issue and optionally file a PR
 
 To execute the tests run `pnpm test`.
 
-To learn about ESLint plugin development see the [relevant section](https://eslint.org/docs/developer-guide/working-with-plugins) of the ESLint docs. You can also checkout the [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint) repo which has some more information specific to TypeScript.
+To learn about ESLint plugin development see the
+[relevant section](https://eslint.org/docs/developer-guide/working-with-plugins) of the ESLint docs.
+You can also checkout the [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint) repo which has
+some more information specific to TypeScript.
 
-In order to know which AST nodes are created for a snippet of TypeScript code you can use [AST explorer](https://astexplorer.net/) with options JavaScript and @typescript-eslint/parser.
+In order to know which AST nodes are created for a snippet of TypeScript code you can use
+[AST explorer](https://astexplorer.net/) with options JavaScript and @typescript-eslint/parser.
 
 ### Commit Messages
 
 > tl;dr: use `npx cz` instead of `git commit`.
 
-Commit messages must follow [Conventional Commit messages guidelines](https://www.conventionalcommits.org/en/v1.0.0/). You can use `npx cz` instead of `git commit` to run an interactive prompt to generate the commit message. We've customize the prompt specifically for this project. For more information see [commitizen](https://github.com/commitizen/cz-cli#readme).
+Commit messages must follow [Conventional Commit messages guidelines](https://www.conventionalcommits.org/en/v1.0.0/).
+You can use `npx cz` instead of `git commit` to run an interactive prompt to generate the commit message. We've
+customize the prompt specifically for this project. For more information see
+[commitizen](https://github.com/commitizen/cz-cli#readme).
 
 ### How to publish
 
-Publishing is handled by [semantic release](https://github.com/semantic-release/semantic-release#readme) - there shouldn't be any need to publish manually.
+Publishing is handled by [semantic release](https://github.com/semantic-release/semantic-release#readme) -
+there shouldn't be any need to publish manually.

DONATIONS.md

@@ -4,7 +4,8 @@ Any donations would be much appreciated. 😄
 
 ## Enterprise Users
 
-`eslint-plugin-functional` is available as part of the [Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-eslint-plugin-functional).
+`eslint-plugin-functional` is available as part of the
+[Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-eslint-plugin-functional).
 
 ## Real money
 
@@ -13,23 +14,32 @@ Any donations would be much appreciated. 😄
 ## Cryptocurrencies
 
 <details>
-<summary><img src="https://raw.githubusercontent.com/get-icon/geticon/master/icons/bitcoin.svg" height="16" alt="Bitcoin Logo"> Bitcoin</summary>
+<summary>
+  <img src="https://raw.githubusercontent.com/get-icon/geticon/master/icons/bitcoin.svg" height="16" alt="Bitcoin Logo">
+  Bitcoin
+</summary>
 
 ![bitcoin address QR code](https://raw.githubusercontent.com/RebeccaStevens/RebeccaStevens/main/assets/cryptocurrencies/wallets/bitcoin.png)\
 bc1qgr2xwvkpztsaq9kplud84r3dfz4g3e7d5c5lxm
 
 </details>
 
 <details>
-<summary><img src="https://raw.githubusercontent.com/get-icon/geticon/master/icons/ethereum.svg" height="16" alt="Ethereum Logo"> Ethereum</summary>
+<summary>
+  <img src="https://raw.githubusercontent.com/get-icon/geticon/master/icons/ethereum.svg" height="16" alt="Ethereum Logo">
+  Ethereum
+</summary>
 
 ![ethereum address QR code](https://raw.githubusercontent.com/RebeccaStevens/RebeccaStevens/main/assets/cryptocurrencies/wallets/ethereum.png)\
 0x643769d1DD2Cb912656dAA27C1b97e5A81EF9fd2
 
 </details>
 
 <details>
-<summary><img src="https://raw.githubusercontent.com/RebeccaStevens/RebeccaStevens/main/assets/cryptocurrencies/logos/ltc.svg" height="16" alt="Litecoin Logo"> Litecoin</summary>
+<summary>
+  <img src="https://raw.githubusercontent.com/RebeccaStevens/RebeccaStevens/main/assets/cryptocurrencies/logos/ltc.svg" height="16" alt="Litecoin Logo">  <!-- markdownlint-disable-line MD013 -->
+  Litecoin
+</summary>
 
 ![litecoin address QR code](https://raw.githubusercontent.com/RebeccaStevens/RebeccaStevens/main/assets/cryptocurrencies/wallets/litecoin.png)\
 ltc1qxr7p6z4hrh87g9mjjk67chyduwrh2nfrpxksjv