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compiler: treat pruned scope outputs as reactive #29790

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merged 7 commits into from
Jun 10, 2024

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@josephsavona josephsavona commented Jun 6, 2024

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Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like aliasing and control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice.

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josephsavona added a commit that referenced this pull request Jun 6, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like aliasing and control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice.

ghstack-source-id: ce19c5c26f33653765970cfd546be47943f7aad2
Pull Request resolved: #29790
@facebook-github-bot facebook-github-bot added the React Core Team Opened by a member of the React Core Team label Jun 6, 2024
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react-sizebot commented Jun 6, 2024

Comparing: a0a435d...0a5761c

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.js = 6.66 kB 6.66 kB +0.05% 1.82 kB 1.82 kB
oss-stable/react-dom/cjs/react-dom-client.production.js = 497.25 kB 497.25 kB = 89.11 kB 89.11 kB
oss-experimental/react-dom/cjs/react-dom.production.js = 6.67 kB 6.67 kB = 1.83 kB 1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js = 502.07 kB 502.07 kB = 89.79 kB 89.79 kB
facebook-www/ReactDOM-prod.classic.js = 596.75 kB 596.75 kB = 105.19 kB 105.19 kB
facebook-www/ReactDOM-prod.modern.js = 570.93 kB 570.93 kB = 101.13 kB 101.13 kB
test_utils/ReactAllWarnings.js Deleted 63.89 kB 0.00 kB Deleted 15.97 kB 0.00 kB

Significant size changes

Includes any change greater than 0.2%:

Expand to show
Name +/- Base Current +/- gzip Base gzip Current gzip
test_utils/ReactAllWarnings.js Deleted 63.89 kB 0.00 kB Deleted 15.97 kB 0.00 kB

Generated by 🚫 dangerJS against 0a5761c

Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like aliasing and control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice.

[ghstack-poisoned]
josephsavona added a commit that referenced this pull request Jun 6, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like aliasing and control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice.

ghstack-source-id: 800ca63920ff82f1ed00c046f5ab65f6a057c3ce
Pull Request resolved: #29790
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like aliasing and control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice.

[ghstack-poisoned]
josephsavona added a commit that referenced this pull request Jun 6, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

ghstack-source-id: 0cae8448051e5365c316f246fb2a1637c9e60d2b
Pull Request resolved: #29790
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

[ghstack-poisoned]
josephsavona added a commit that referenced this pull request Jun 6, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

ghstack-source-id: 0cae8448051e5365c316f246fb2a1637c9e60d2b
Pull Request resolved: #29790
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

[ghstack-poisoned]
josephsavona added a commit that referenced this pull request Jun 6, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

ghstack-source-id: 19131489bfa44fe8dabefcc5242005a9ad2c2f70
Pull Request resolved: #29790
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

[ghstack-poisoned]
josephsavona added a commit that referenced this pull request Jun 6, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

ghstack-source-id: 11f48618d0413075c43ee88529e00e8e523e61f7
Pull Request resolved: #29790
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

[ghstack-poisoned]
josephsavona added a commit that referenced this pull request Jun 7, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

ghstack-source-id: 364430bbeca4cfca2fbf9df4d92b2e61b3352311
Pull Request resolved: #29790
@josephsavona josephsavona merged commit 0a5761c into gh/josephsavona/26/base Jun 10, 2024
54 of 55 checks passed
josephsavona added a commit that referenced this pull request Jun 10, 2024
Mostly addresses the issue with non-reactive pruned scopes. Before, values from pruned scopes would not be memoized, but could still be depended upon by downstream scopes. However, those downstream scopes would assume the value could never change. This could allow the developer to observe two different versions of a value - the freshly created one (if observed outside a scope) or a cached one (if observed inside, or through) a scope which used the value but didn't depend on it.

The fix here is to consider the outputs of pruned reactive scopes as reactive. Note that this is a partial fix because of things like control variables — the full solution would be to mark these values as reactive, and then re-run InferReactivePlaces. We can do this once we've fully converted our pipeline to use HIR everywhere. For now, this should fix most issues in practice because PruneNonReactiveDependencies already does basic alias tracking (see new fixture).

ghstack-source-id: 364430bbeca4cfca2fbf9df4d92b2e61b3352311
Pull Request resolved: #29790
@josephsavona josephsavona deleted the gh/josephsavona/26/head branch June 10, 2024 15:42
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