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add option to enable native view transitions using the new View Transitions API #842

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add option to enable native view transitions using the new View Transitions API #842

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2 changes: 1 addition & 1 deletion rollup.config.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
import path from 'path';
import resolve from '@rollup/plugin-node-resolve';
import babel from '@rollup/plugin-babel';
import pkg from './package.json';
import pkg from './package.json' assert {type: "json"};

const plugins = [
// The 'node-resolve' plugin allows Rollup to resolve bare module imports like
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56 changes: 39 additions & 17 deletions src/router.js
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Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,8 @@ export class Router extends Resolver {
baseUrl: baseHref && Resolver.__createUrl(baseHref, document.URL).href.replace(/[^/]*$/, '')
}, options));

this.enableNativeViewTransitions = options && options.enableNativeViewTransitions;

this.resolveRoute = context => this.__resolveRoute(context);

const triggers = Router.NavigationTrigger;
Expand Down Expand Up @@ -472,23 +474,43 @@ export class Router extends Resolver {
return this.location;
}

this.__addAppearingContent(context, previousContext);
const animationDone = this.__animateIfNeeded(context);

this.__runOnAfterEnterCallbacks(context);
this.__runOnAfterLeaveCallbacks(context, previousContext);

return animationDone.then(() => {
if (this.__isLatestRender(context)) {
// If there is another render pass started after this one,
// the 'disappearing content' would be removed when the other
// render pass calls `this.__addAppearingContent()`
this.__removeDisappearingContent();

this.__previousContext = context;
return this.location;
}
});
if(this.enableNativeViewTransitions && document.startViewTransition) {
document.startViewTransition(
() => {
this.__addAppearingContent(context, previousContext);
this.__runOnAfterEnterCallbacks(context);
this.__runOnAfterLeaveCallbacks(context, previousContext);
if (this.__isLatestRender(context)) {
// If there is another render pass started after this one,
// the 'disappearing content' would be removed when the other
// render pass calls `this.__addAppearingContent()`
this.__removeDisappearingContent();

this.__previousContext = context;
return this.location;
}
}
)
}
else {
this.__addAppearingContent(context, previousContext);
const animationDone = this.__animateIfNeeded(context);

this.__runOnAfterEnterCallbacks(context);
this.__runOnAfterLeaveCallbacks(context, previousContext);

return animationDone.then(() => {
if (this.__isLatestRender(context)) {
// If there is another render pass started after this one,
// the 'disappearing content' would be removed when the other
// render pass calls `this.__addAppearingContent()`
this.__removeDisappearingContent();

this.__previousContext = context;
return this.location;
}
});
}
}
})
.catch(error => {
Expand Down