Add eslint configuration

Author: caro401

.editorconfig

@@ -0,0 +1,9 @@
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.{js,json,scss,yml}]
+charset = utf-8
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true

.eslintrc.yml

@@ -0,0 +1,61 @@
+root: true
+
+extends:
+  - 'eslint:recommended'
+
+parserOptions:
+  ecmaVersion: 2022
+  sourceType: module
+  requireConfigFile: false
+
+env:
+  es2020: true
+  node: true
+  browser: true
+
+rules:
+  array-bracket-spacing: 2
+  block-spacing: 2
+  brace-style: [2, '1tbs', { allowSingleLine: true }]
+  comma-dangle: 2
+  comma-spacing: 2
+  comma-style: 2
+  complexity: [1, 16]
+  dot-location: [2, 'property']
+  eqeqeq: [2, 'smart']
+  indent: [0, 2, { SwitchCase: 1 }]
+  indent-legacy: [2, 2, { SwitchCase: 1 }]
+  key-spacing: [1, { beforeColon: false, afterColon: true }]
+  keyword-spacing: 2
+  max-depth: [1, 6]
+  max-len: [1, 80, 2, { ignoreComments: true, ignoreUrls: true, ignorePattern: "[`'\"\/],?$" }]
+  max-nested-callbacks: [1, 4]
+  no-caller: 2
+  no-constant-condition: [2, { checkLoops: false }]
+  no-eval: 2
+  no-implied-eval: 2
+  no-mixed-spaces-and-tabs: 2
+  no-multi-str: 2
+  no-shadow:
+    [2, { allow: ['done', 'reject', 'resolve', 'conn', 'cb', 'err', 'error'] }]
+  no-spaced-func: 2
+  no-trailing-spaces: 2
+  no-unexpected-multiline: 2
+  no-unneeded-ternary: 2
+  no-unreachable: 2
+  no-useless-concat: 2
+  no-unsafe-finally: 0
+  object-curly-spacing: [2, 'always']
+  operator-linebreak: [2, 'after']
+  quote-props: [2, 'consistent-as-needed']
+  quotes: [2, 'single', 'avoid-escape']
+  radix: 2
+  require-atomic-updates: 0
+  semi-spacing: 0
+  semi: [2, 'never']
+  space-before-blocks: 2
+  space-before-function-paren: [2, { anonymous: 'always', named: 'never' }]
+  space-infix-ops: 2
+  space-unary-ops: 2
+  space-in-parens: 2
+  wrap-regex: 2

.mocharc.yml

@@ -0,0 +1,6 @@
+color: true
+recursive: true
+reporter: dot
+renderer: true
+require:
+  - test/support/fixtures.js

.nvmrc

@@ -0,0 +1 @@
+v16.15.0

package.json

@@ -42,16 +42,9 @@
       "hint": "The template determines how to import the IIIF manifest metadata section"
     }
   ],
-  "mocha": {
-    "color": true,
-    "renderer": true,
-    "require": [
-      "test/support/fixtures.js"
-    ]
-  },
   "devDependencies": {
     "electron": "^16.0.4",
     "electron-mocha": "^11.0.2",
-    "jsonld": "^5.2.0"
+    "eslint": "^8.14.0",
   }
 }

test/.eslintrc.yml

@@ -0,0 +1,10 @@
+# vi: set ft=yaml :
+env:
+  mocha: true
+
+globals:
+  F: true
+
+rules:
+  no-console: 0
+  max-nested-callbacks: [1, 8]