enable strict equal lint rule (#990)

.eslintrc.cjs

@@ -38,6 +38,7 @@ module.exports = {
     '@typescript-eslint/no-inferrable-types': 'off',
     '@typescript-eslint/no-unused-vars': ['error', { ignoreRestSiblings: true, argsIgnorePattern: '^_' }],
     curly: 2,
+    eqeqeq: ['error', 'always', { null: 'ignore' }],
     'no-undef': 'off',
     'sort-keys': ['error', 'asc', { caseSensitive: true, natural: false, minKeys: 2 }],
   },

src/components/activity/ActivityDirectiveChangelog.svelte

@@ -254,7 +254,7 @@
           {formatParameterValue(activityRevisionChangeMap[i].name, activityRevisionChangeMap[i].currentValue)}
         </div>
         <div class="actions">
-          {#if i == 0}
+          {#if i === 0}
             <span>Current Revision</span>
           {:else}
             <button

src/components/activity/ActivityFormPanel.svelte

@@ -78,7 +78,7 @@
     }
 
     const revision: ActivityDirectiveRevision = event.detail;
-    const activityType = $activityTypes.find(type => type.name == $selectedActivityDirective?.type);
+    const activityType = $activityTypes.find(type => type.name === $selectedActivityDirective?.type);
     const changedKeys: string[] = [];
 
     const potentialChanges: Array<keyof ActivityDirective & keyof ActivityDirectiveRevision> = [

src/utilities/modal.ts

@@ -50,7 +50,7 @@ export function modalBodyClickListener(): void {
 export function modalBodyKeyListener(event: KeyboardEvent): void {
   if (browser) {
     const target: ModalElement | null = document.querySelector('#svelte-modal');
-    if (target && target.resolve && event.key == 'Escape' && target.getAttribute('data-dismissible') !== 'false') {
+    if (target && target.resolve && event.key === 'Escape' && target.getAttribute('data-dismissible') !== 'false') {
       target.replaceChildren();
       target.resolve({ confirm: false });
       target.resolve = null;

src/utilities/useActions.ts

@@ -49,7 +49,7 @@ export function useActions(node: HTMLElement | SVGElement, actions: ActionArray)
     },
 
     update(actions: ActionArray) {
-      if (((actions && actions.length) || 0) != actionReturns.length) {
+      if (((actions && actions.length) || 0) !== actionReturns.length) {
         throw new Error('You must not change the length of an actions array.');
       }
 

src/workers/workerHelpers.ts

@@ -318,7 +318,7 @@ function validateInteger(value: string, name: string, range: NumericRange | null
   if ((error_string = validateFloat(value, name, range)) !== false) {
     return error_string;
   }
-  if (Number(value) % 1 != 0) {
+  if (Number(value) % 1 !== 0) {
     return CustomErrorCodes.InvalidInteger(name, value);
   }