[DO NOT MERGE] the delta between main and what we're experimenting with that needs a bunch of RFCs first

[NullVoxPopuli]

This PR shows a strategy of working towards our goal of removing stuff from the framework we all know we don't want -- but uses the act of doing the work to help discover what needs to go in to an RFC, what order RFCs need to be in, and what blockers/dependencies are/could be.

Needed RFCs

• Evented Mixin RFC Removal PR 1 Removal PR 2
• ArrayProxy RFC Removal PR
• ObjectProxy RFC Removal PR
• PromiseProxy Mixin RFC Removal PR
• Comparable Mixin RFC Removal PR (Not public)
• actions hash and send RFC Removal PR
• Ember Array and Mixins, including array computed macros RFC Removal PR
• Observable Mixin and observer helper RFC Removal PR 1 Removal PR 2
• Enumerable Mixin RFC Removal PR
• Mixin RFC Removal PR
• EmberObject#reopen RFC Removal PR]([Next] Kill mixins #20935)
• EmberObject#reopenClass RFC Removal PR]([Next] Kill mixins #20935)
• EmberObject#extend RFC Removal PR]([Next] Kill mixins #20935)

[github-actions]

Estimated Asset Sizes

Diff

--- main/out.txt	2025-06-17 19:22:58.000000000 +0000
+++ pr/./pr-15789135057/out.txt	2025-06-20 22:51:46.000000000 +0000
@@ -1,59 +1,59 @@
-╔═══════╤══════════╤═══════════╗
-║       │ Min      │ Gzip      ║
-╟───────┼──────────┼───────────╢
-║ Total │ 409.3 KB │ 228.73 KB ║
-╚═══════╧══════════╧═══════════╝
+╔═══════╤═══════════╤═══════════╗
+║       │ Min       │ Gzip      ║
+╟───────┼───────────┼───────────╢
+║ Total │ 379.36 KB │ 211.09 KB ║
+╚═══════╧═══════════╧═══════════╝
 
 ╔══════════════════════╤═══════════╤═══════════╗
 ║ @ember/*             │ Min       │ Gzip      ║
 ╟──────────────────────┼───────────┼───────────╢
-║ Total                │ 239.69 KB │ 147.05 KB ║
+║ Total                │ 209.75 KB │ 129.46 KB ║
 ╟──────────────────────┼───────────┼───────────╢
-║ -internals           │ 35.92 KB  │ 25.65 KB  ║
-║ application          │ 12.83 KB  │ 7.58 KB   ║
-║ array                │ 12.66 KB  │ 7.32 KB   ║
+║ -internals           │ 28.24 KB  │ 20.19 KB  ║
+║ application          │ 12.39 KB  │ 7.55 KB   ║
+║ array                │ 1.38 KB   │ 1.35 KB   ║
 ║ canary-features      │ 304 B     │ 405 B     ║
-║ component            │ 1.07 KB   │ 995 B     ║
-║ controller           │ 1.8 KB    │ 1.36 KB   ║
-║ debug                │ 11.4 KB   │ 7.87 KB   ║
+║ component            │ 1.07 KB   │ 967 B     ║
+║ controller           │ 1.25 KB   │ 1.11 KB   ║
+║ debug                │ 10.98 KB  │ 7.82 KB   ║
 ║ deprecated-features  │ 31 B      │ 77 B      ║
 ║ destroyable          │ 561 B     │ 383 B     ║
-║ enumerable           │ 259 B     │ 387 B     ║
-║ helper               │ 823 B     │ 615 B     ║
+║ enumerable           │ 0 B       │ 0 B       ║
+║ helper               │ 823 B     │ 595 B     ║
 ║ instrumentation      │ 2.43 KB   │ 1.78 KB   ║
-║ modifier             │ 669 B     │ 605 B     ║
-║ object               │ 33.78 KB  │ 20.82 KB  ║
+║ modifier             │ 669 B     │ 612 B     ║
+║ object               │ 26.43 KB  │ 15.9 KB   ║
 ║ owner                │ 159 B     │ 178 B     ║
 ║ renderer             │ 385 B     │ 344 B     ║
-║ routing              │ 58.05 KB  │ 33.12 KB  ║
-║ runloop              │ 2.2 KB    │ 1.41 KB   ║
-║ service              │ 859 B     │ 741 B     ║
-║ template             │ 396 B     │ 342 B     ║
+║ routing              │ 56.83 KB  │ 33.01 KB  ║
+║ runloop              │ 2.2 KB    │ 1.35 KB   ║
+║ service              │ 859 B     │ 740 B     ║
+║ template             │ 396 B     │ 340 B     ║
 ║ template-compilation │ 429 B     │ 366 B     ║
 ║ template-compiler    │ 57.81 KB  │ 30.44 KB  ║
 ║ template-factory     │ 94 B      │ 160 B     ║
 ║ test                 │ 923 B     │ 627 B     ║
-║ utils                │ 3.93 KB   │ 3.51 KB   ║
+║ utils                │ 3.17 KB   │ 3.19 KB   ║
 ║ version              │ 55 B      │ 131 B     ║
 ╚══════════════════════╧═══════════╧═══════════╝
 
 ╔═════════════════╤═══════════╤══════════╗
 ║ @glimmer/*      │ Min       │ Gzip     ║
 ╟─────────────────┼───────────┼──────────╢
-║ Total           │ 169.61 KB │ 81.69 KB ║
+║ Total           │ 169.61 KB │ 81.63 KB ║
 ╟─────────────────┼───────────┼──────────╢
 ║ destroyable     │ 2.7 KB    │ 1.35 KB  ║
 ║ encoder         │ 596 B     │ 653 B    ║
 ║ env             │ 38 B      │ 87 B     ║
 ║ global-context  │ 886 B     │ 545 B    ║
-║ manager         │ 12.19 KB  │ 5.44 KB  ║
+║ manager         │ 12.19 KB  │ 5.41 KB  ║
 ║ node            │ 2.71 KB   │ 1.81 KB  ║
 ║ opcode-compiler │ 29.89 KB  │ 13.23 KB ║
 ║ owner           │ 159 B     │ 202 B    ║
 ║ program         │ 7.1 KB    │ 3.63 KB  ║
 ║ reference       │ 5.51 KB   │ 3.18 KB  ║
 ║ runtime         │ 95.26 KB  │ 42.51 KB ║
-║ tracking        │ 989 B     │ 972 B    ║
+║ tracking        │ 989 B     │ 944 B    ║
 ║ util            │ 3.03 KB   │ 2.29 KB  ║
 ║ validator       │ 6 KB      │ 3.72 KB  ║
 ║ vm              │ 784 B     │ 798 B    ║

Details

This PR

main

╔═══════╤═══════════╤═══════════╗ ║ │ Min │ Gzip ║ ╟───────┼───────────┼───────────╢ ║ Total │ 379.36 KB │ 211.09 KB ║ ╚═══════╧═══════════╧═══════════╝ ╔══════════════════════╤═══════════╤═══════════╗ ║ @ember/* │ Min │ Gzip ║ ╟──────────────────────┼───────────┼───────────╢ ║ Total │ 209.75 KB │ 129.46 KB ║ ╟──────────────────────┼───────────┼───────────╢ ║ -internals │ 28.24 KB │ 20.19 KB ║ ║ application │ 12.39 KB │ 7.55 KB ║ ║ array │ 1.38 KB │ 1.35 KB ║ ║ canary-features │ 304 B │ 405 B ║ ║ component │ 1.07 KB │ 967 B ║ ║ controller │ 1.25 KB │ 1.11 KB ║ ║ debug │ 10.98 KB │ 7.82 KB ║ ║ deprecated-features │ 31 B │ 77 B ║ ║ destroyable │ 561 B │ 383 B ║ ║ enumerable │ 0 B │ 0 B ║ ║ helper │ 823 B │ 595 B ║ ║ instrumentation │ 2.43 KB │ 1.78 KB ║ ║ modifier │ 669 B │ 612 B ║ ║ object │ 26.43 KB │ 15.9 KB ║ ║ owner │ 159 B │ 178 B ║ ║ renderer │ 385 B │ 344 B ║ ║ routing │ 56.83 KB │ 33.01 KB ║ ║ runloop │ 2.2 KB │ 1.35 KB ║ ║ service │ 859 B │ 740 B ║ ║ template │ 396 B │ 340 B ║ ║ template-compilation │ 429 B │ 366 B ║ ║ template-compiler │ 57.81 KB │ 30.44 KB ║ ║ template-factory │ 94 B │ 160 B ║ ║ test │ 923 B │ 627 B ║ ║ utils │ 3.17 KB │ 3.19 KB ║ ║ version │ 55 B │ 131 B ║ ╚══════════════════════╧═══════════╧═══════════╝ ╔═════════════════╤═══════════╤══════════╗ ║ @glimmer/* │ Min │ Gzip ║ ╟─────────────────┼───────────┼──────────╢ ║ Total │ 169.61 KB │ 81.63 KB ║ ╟─────────────────┼───────────┼──────────╢ ║ destroyable │ 2.7 KB │ 1.35 KB ║ ║ encoder │ 596 B │ 653 B ║ ║ env │ 38 B │ 87 B ║ ║ global-context │ 886 B │ 545 B ║ ║ manager │ 12.19 KB │ 5.41 KB ║ ║ node │ 2.71 KB │ 1.81 KB ║ ║ opcode-compiler │ 29.89 KB │ 13.23 KB ║ ║ owner │ 159 B │ 202 B ║ ║ program │ 7.1 KB │ 3.63 KB ║ ║ reference │ 5.51 KB │ 3.18 KB ║ ║ runtime │ 95.26 KB │ 42.51 KB ║ ║ tracking │ 989 B │ 944 B ║ ║ util │ 3.03 KB │ 2.29 KB ║ ║ validator │ 6 KB │ 3.72 KB ║ ║ vm │ 784 B │ 798 B ║ ║ wire-format │ 1.84 KB │ 1.35 KB ║ ╚═════════════════╧═══════════╧══════════╝

╔═══════╤══════════╤═══════════╗ ║ │ Min │ Gzip ║ ╟───────┼──────────┼───────────╢ ║ Total │ 409.3 KB │ 228.73 KB ║ ╚═══════╧══════════╧═══════════╝ ╔══════════════════════╤═══════════╤═══════════╗ ║ @ember/* │ Min │ Gzip ║ ╟──────────────────────┼───────────┼───────────╢ ║ Total │ 239.69 KB │ 147.05 KB ║ ╟──────────────────────┼───────────┼───────────╢ ║ -internals │ 35.92 KB │ 25.65 KB ║ ║ application │ 12.83 KB │ 7.58 KB ║ ║ array │ 12.66 KB │ 7.32 KB ║ ║ canary-features │ 304 B │ 405 B ║ ║ component │ 1.07 KB │ 995 B ║ ║ controller │ 1.8 KB │ 1.36 KB ║ ║ debug │ 11.4 KB │ 7.87 KB ║ ║ deprecated-features │ 31 B │ 77 B ║ ║ destroyable │ 561 B │ 383 B ║ ║ enumerable │ 259 B │ 387 B ║ ║ helper │ 823 B │ 615 B ║ ║ instrumentation │ 2.43 KB │ 1.78 KB ║ ║ modifier │ 669 B │ 605 B ║ ║ object │ 33.78 KB │ 20.82 KB ║ ║ owner │ 159 B │ 178 B ║ ║ renderer │ 385 B │ 344 B ║ ║ routing │ 58.05 KB │ 33.12 KB ║ ║ runloop │ 2.2 KB │ 1.41 KB ║ ║ service │ 859 B │ 741 B ║ ║ template │ 396 B │ 342 B ║ ║ template-compilation │ 429 B │ 366 B ║ ║ template-compiler │ 57.81 KB │ 30.44 KB ║ ║ template-factory │ 94 B │ 160 B ║ ║ test │ 923 B │ 627 B ║ ║ utils │ 3.93 KB │ 3.51 KB ║ ║ version │ 55 B │ 131 B ║ ╚══════════════════════╧═══════════╧═══════════╝ ╔═════════════════╤═══════════╤══════════╗ ║ @glimmer/* │ Min │ Gzip ║ ╟─────────────────┼───────────┼──────────╢ ║ Total │ 169.61 KB │ 81.69 KB ║ ╟─────────────────┼───────────┼──────────╢ ║ destroyable │ 2.7 KB │ 1.35 KB ║ ║ encoder │ 596 B │ 653 B ║ ║ env │ 38 B │ 87 B ║ ║ global-context │ 886 B │ 545 B ║ ║ manager │ 12.19 KB │ 5.44 KB ║ ║ node │ 2.71 KB │ 1.81 KB ║ ║ opcode-compiler │ 29.89 KB │ 13.23 KB ║ ║ owner │ 159 B │ 202 B ║ ║ program │ 7.1 KB │ 3.63 KB ║ ║ reference │ 5.51 KB │ 3.18 KB ║ ║ runtime │ 95.26 KB │ 42.51 KB ║ ║ tracking │ 989 B │ 972 B ║ ║ util │ 3.03 KB │ 2.29 KB ║ ║ validator │ 6 KB │ 3.72 KB ║ ║ vm │ 784 B │ 798 B ║ ║ wire-format │ 1.84 KB │ 1.35 KB ║ ╚═════════════════╧═══════════╧══════════╝