diff --git a/.eslintrc.js b/.eslintrc.js
index ba8707bdc..800cc2af8 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,7 +1,107 @@
-const libraryGlobals = {
-  "d3": "readonly"
+const globals = {
+  libraries: {
+    d3: 'readonly',
+    $: 'readonly',
+    PriorityQueue: 'readonly',
+    ThreeD: 'readonly',
+    Delaunator: 'readonly',
+  },
+  indexSelectors: {
+    alertMessage: 'readonly',
+    culturesSet: 'readonly',
+    densityInput: 'readonly',
+    heightExponentInput: 'readonly',
+    hideLabels: 'readonly',
+    latitudeInput: 'readonly',
+    latitudeOutput: 'readonly',
+    mapSizeInput: 'readonly',
+    mapSizeOutput: 'readonly',
+    mapHeightInput: 'readonly',
+    mapWidthInput: 'readonly',
+    onloadMap: 'readonly',
+    optionsSeed: 'readonly',
+    populationRate: 'readonly',
+    precInput: 'readonly',
+    temperatureEquatorInput: 'readonly',
+    temperaturePoleInput: 'readonly',
+    templateInput: 'readonly',
+    urbanization: 'readonly',
+  },
+  modules: {
+    BurgsAndStates: 'readonly',
+    Cultures: 'readonly',
+    HeightmapGenerator: 'readonly',
+    Names: 'readonly',
+    OceanLayers: 'readonly',
+    Religions: 'readonly',
+    Rivers: 'readonly',
+    Voronoi: 'readonly',
+  },
+  saveAndLoad: {
+    uploadMap: 'readonly',
+  },
+  utilities: {
+    P: 'readonly',
+    rn: 'readonly',
+    ra: 'readonly',
+    rw: 'readonly',
+    rand: 'readonly',
+    round: 'readonly',
+    getAdjective: 'readonly',
+    getPackPolygon: 'readonly',
+    getBoundaryPoints: 'readonly',
+    getJitteredGrid: 'readonly',
+    capitalize: 'readonly',
+    biased: 'readonly',
+    debounce: 'readonly',
+    getNextId: 'readonly',
+    normalize: 'readonly',
+    gauss: 'readonly',
+    link: 'readonly',
+    isLand: 'readonly',
+    convertTemperature: 'readonly',
+    parseError: 'readonly',
+    ldb: 'readonly',  // localStorageDB
+  },
+  uiEditors: {
+    clearLegend: 'readonly',
+    closeDialogs: 'readonly',
+    unfog: 'readonly',
+  },
+  uiGeneral: {
+    clearMainTip: 'readonly',
+    getFriendlyHeight: 'readonly',
+    locked: 'readonly',
+    tip: 'readonly',
+  },
+  uiLayers: {
+    applyPreset: 'readonly',
+    drawBorders: 'readonly',
+    drawCoordinates: 'readonly',
+    drawStates: 'readonly',
+    restoreLayers: 'readonly',
+  },
+  uiMeasurers: {
+    addRuler: 'readonly',
+    drawScaleBar: 'readonly',
+  },
+  uiOptions: {
+    applyMapSize: 'readonly',
+    applyStoredOptions: 'readonly',
+    randomizeOptions: 'readonly',
+  },
+  uiStyle: {
+    applyStyleOnLoad: 'readonly',
+  },
+  uiWorldConfigurator: {
+    editWorld: 'readonly',
+  },
 };
 
+// flattens nested objects in 'globals' into a single object of key-value pairs.
+const allGlobals = Object.keys(globals).reduce((gs, key) => Object.assign(gs, globals[key]), {});
+
+
 module.exports = {
   "env": {
     "browser": true,
@@ -11,11 +111,17 @@ module.exports = {
   "globals": Object.assign({
     "Atomics": "readonly",
     "SharedArrayBuffer": "readonly"
-  }, libraryGlobals),
+  }, allGlobals),
   "parserOptions": {
     "ecmaVersion": 2018,
     "sourceType": "module"
   },
   "rules": {
+    "prefer-const": "off",
+    "no-inner-declarations": "warn",
+    "no-unused-vars": "warn",
+    "one-var": "off",
+    "no-bitwise": "off",
+    "no-useless-escape": "warn"
   }
 };
\ No newline at end of file
diff --git a/package.json b/package.json
index 09e739399..0fc217034 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,7 @@
     "eslint-config-i-am-meticulous": "^11.0.0"
   },
   "scripts": {
+    "lint-main": "eslint main.js",
     "lint": "eslint modules",
     "lint-fix": "eslint modules --fix",
     "test": "echo \"no tests yet\""