Remove (action) and {{action}}

packages/@ember/-internals/glimmer/lib/resolver.ts

@@ -37,14 +37,12 @@ import { default as inElementNullCheckHelper } from './helpers/-in-element-null-
 import { default as normalizeClassHelper } from './helpers/-normalize-class';
 import { default as resolve } from './helpers/-resolve';
 import { default as trackArray } from './helpers/-track-array';
-import { default as action } from './helpers/action';
 import { default as eachIn } from './helpers/each-in';
 import { default as mut } from './helpers/mut';
 import { default as readonly } from './helpers/readonly';
 import { default as unbound } from './helpers/unbound';
 import { default as uniqueId } from './helpers/unique-id';
 
-import actionModifier from './modifiers/action';
 import { mountHelper } from './syntax/mount';
 import { outletHelper } from './syntax/outlet';
 
@@ -109,7 +107,6 @@ function lookupComponentPair(
 }
 
 const BUILTIN_KEYWORD_HELPERS: Record<string, object> = {
-  action,
   mut,
   readonly,
   unbound,
@@ -147,12 +144,7 @@ if (DEBUG) {
   BUILTIN_HELPERS['-disallow-dynamic-resolution'] = disallowDynamicResolution;
 }
 
-const BUILTIN_KEYWORD_MODIFIERS: Record<string, ModifierDefinitionState> = {
-  action: actionModifier,
-};
-
 const BUILTIN_MODIFIERS: Record<string, object> = {
-  ...BUILTIN_KEYWORD_MODIFIERS,
   on,
 };
 

packages/@ember/-internals/glimmer/lib/utils/process-args.ts

@@ -4,7 +4,6 @@ import type { Reference } from '@glimmer/reference';
 import { isUpdatableRef, updateRef, valueForRef } from '@glimmer/reference';
 import { assert } from '@ember/debug';
 import { ARGS } from '../component-managers/curly';
-import { ACTIONS } from '../helpers/action';
 
 // ComponentArgs takes EvaluatedNamedArgs and converts them into the
 // inputs needed by CurlyComponents (attrs and props, with mutable
@@ -20,9 +19,7 @@ export function processComponentArgs(namedArgs: CapturedNamedArguments) {
     assert('expected ref', ref);
     let value = valueForRef(ref);
 
-    let isAction = typeof value === 'function' && ACTIONS.has(value);
-
-    if (isUpdatableRef(ref) && !isAction) {
+    if (isUpdatableRef(ref)) {
       attrs[name] = new MutableCell(ref, value);
     } else {
       attrs[name] = value;