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[labs/observers] Prevent failing in SSR #4591

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[labs/observers] Prevent failing in SSR #4591

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2ab0099
Add "isServer" check in observers' constructors
a11delavar Mar 22, 2024
196a8d4
Add changeset
a11delavar Mar 22, 2024
3c4aed7
Try to fix incorrect package import causing tests to fail
a11delavar Mar 22, 2024
2ccd17b
Merge branch 'main' into fix-observers-failing-in-ssr
a11delavar Mar 30, 2024
13e9db7
Allow lit-html 3.x as a dependency as well
a11delavar May 1, 2024
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5 changes: 5 additions & 0 deletions .changeset/bright-yaks-wink.md
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@@ -0,0 +1,5 @@
---
'@lit-labs/observers': patch
---

Do not initialize observers to prevent failing in SSR environment.
1 change: 1 addition & 0 deletions packages/labs/observers/package.json
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Expand Up @@ -168,6 +168,7 @@
"@types/trusted-types": "^2.0.2"
},
"dependencies": {
"lit-html": "^2.4.0",
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"@lit/reactive-element": "^1.0.0 || ^2.0.0"
},
"publishConfig": {
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4 changes: 4 additions & 0 deletions packages/labs/observers/src/intersection-controller.ts
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Expand Up @@ -3,6 +3,7 @@
* Copyright 2021 Google LLC
* SPDX-License-Identifier: BSD-3-Clause
*/
import {isServer} from 'lit-html/is-server.js';
import {
ReactiveController,
ReactiveControllerHost,
Expand Down Expand Up @@ -94,6 +95,9 @@ export class IntersectionController<T = unknown> implements ReactiveController {
}
this._skipInitial = skipInitial ?? this._skipInitial;
this.callback = callback;
if (isServer) {
return;
}
// Check browser support.
if (!window.IntersectionObserver) {
console.warn(
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4 changes: 4 additions & 0 deletions packages/labs/observers/src/mutation-controller.ts
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Expand Up @@ -3,6 +3,7 @@
* Copyright 2021 Google LLC
* SPDX-License-Identifier: BSD-3-Clause
*/
import {isServer} from 'lit-html/is-server.js';
import {
ReactiveController,
ReactiveControllerHost,
Expand Down Expand Up @@ -94,6 +95,9 @@ export class MutationController<T = unknown> implements ReactiveController {
this._config = config;
this._skipInitial = skipInitial ?? this._skipInitial;
this.callback = callback;
if (isServer) {
return;
}
// Check browser support.
if (!window.MutationObserver) {
console.warn(
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4 changes: 4 additions & 0 deletions packages/labs/observers/src/performance-controller.ts
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Expand Up @@ -3,6 +3,7 @@
* Copyright 2021 Google LLC
* SPDX-License-Identifier: BSD-3-Clause
*/
import {isServer} from 'lit-html/is-server.js';
import {
ReactiveController,
ReactiveControllerHost,
Expand Down Expand Up @@ -80,6 +81,9 @@ export class PerformanceController<T = unknown> implements ReactiveController {
this._config = config;
this._skipInitial = skipInitial ?? this._skipInitial;
this.callback = callback;
if (isServer) {
return;
}
// Check browser support.
if (!window.PerformanceObserver) {
console.warn(
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4 changes: 4 additions & 0 deletions packages/labs/observers/src/resize-controller.ts
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Expand Up @@ -3,6 +3,7 @@
* Copyright 2021 Google LLC
* SPDX-License-Identifier: BSD-3-Clause
*/
import {isServer} from 'lit-html/is-server.js';
import {
ReactiveController,
ReactiveControllerHost,
Expand Down Expand Up @@ -93,6 +94,9 @@ export class ResizeController<T = unknown> implements ReactiveController {
this._config = config;
this._skipInitial = skipInitial ?? this._skipInitial;
this.callback = callback;
if (isServer) {
return;
}
// Check browser support.
if (!window.ResizeObserver) {
console.warn(
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