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Disable preloading runtime script/style by default #1248

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merged 6 commits into from
Jun 30, 2021
Merged

Disable preloading runtime script/style by default #1248

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d3fceef
Disable preloading runtime script/style by default
westonruter Jun 26, 2021
e16ffdb
Invert logic for preloadEnabled config to ensure disabled by default
westonruter Jun 26, 2021
17cd9bd
Automatically omit preloads only when boilerplate is removed
westonruter Jun 29, 2021
62b5830
Manually remove modulepreload from expected_output.fast.html
westonruter Jun 29, 2021
d040957
Update expected output in end-to-end tests
westonruter Jun 29, 2021
1972ac9
Update style[amp-custom] in end-to-end expected output
westonruter Jun 29, 2021
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1 change: 1 addition & 0 deletions packages/optimizer/lib/DomTransformer.js
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,7 @@ const TRANSFORMATIONS_PAIRED_AMP = [
// Removes the boilerplate
// needs to run after ServerSideRendering
'AmpBoilerplateTransformer',
// Needs to come after AmpBoilerplateTransformer.
'RewriteAmpUrls',
// Adds amp-onerror to disable boilerplate early
// needs to run after BoilerplateTransformer and rewrite AMP URLs
Expand Down
10 changes: 8 additions & 2 deletions packages/optimizer/lib/transformers/AmpBoilerplateErrorHandler.js
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Expand Up @@ -15,7 +15,13 @@
*/
'use strict';

const {appendChild, createElement, firstChildByTag, insertText} = require('../NodeUtils');
const {
appendChild,
createElement,
hasAttribute,
firstChildByTag,
insertText,
} = require('../NodeUtils');

/**
* Error handler script to be added to the document's <head> for AMP pages not using ES modules.
Expand Down Expand Up @@ -48,7 +54,7 @@ class AmpBoilerplateErrorHandler {
return;
}

if (html.attribs['i-amphtml-no-boilerplate'] !== undefined) {
if (hasAttribute(html, 'i-amphtml-no-boilerplate')) {
// Boilerplate was removed, so no need for the amp-onerror handler
return;
}
Expand Down
25 changes: 19 additions & 6 deletions packages/optimizer/lib/transformers/RewriteAmpUrls.js
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Expand Up @@ -15,7 +15,14 @@
*/
'use strict';

const {createElement, firstChildByTag, insertAfter, insertBefore, remove} = require('../NodeUtils');
const {
createElement,
hasAttribute,
firstChildByTag,
insertAfter,
insertBefore,
remove,
} = require('../NodeUtils');
const {AMP_CACHE_HOST} = require('../AmpConstants.js');
const {findMetaViewport} = require('../HtmlDomHelper');
const {calculateHost} = require('../RuntimeHostHelper');
Expand Down Expand Up @@ -73,14 +80,18 @@ class RewriteAmpUrls {
let referenceNode = findMetaViewport(head);
const esm = this.esmModulesEnabled || params.esmModulesEnabled;
params.esmModulesEnabled = esm;
const preloadEnabled = !hasAttribute(html, 'i-amphtml-no-boilerplate');
const preloads = [];

while (node) {
if (node.tagName === 'script' && this._usesAmpCacheUrl(node.attribs.src)) {
node.attribs.src = this._replaceUrl(node.attribs.src, host);
if (esm) {
preloads.push(this._addEsm(node));
} else {
const preload = this._addEsm(node, preloadEnabled);
if (preloadEnabled && preload) {
preloads.push(preload);
}
} else if (preloadEnabled) {
preloads.push(this._createPreload(node.attribs.src, 'script'));
}
} else if (
Expand All @@ -89,7 +100,9 @@ class RewriteAmpUrls {
this._usesAmpCacheUrl(node.attribs.href)
) {
node.attribs.href = this._replaceUrl(node.attribs.href, host);
preloads.push(this._createPreload(node.attribs.href, 'style'));
if (preloadEnabled) {
preloads.push(this._createPreload(node.attribs.href, 'style'));
}
} else if (
node.tagName === 'link' &&
node.attribs.rel === 'preload' &&
Expand Down Expand Up @@ -137,10 +150,10 @@ class RewriteAmpUrls {
return host + url.substring(AMP_CACHE_HOST.length);
}

_addEsm(scriptNode) {
_addEsm(scriptNode, preloadEnabled) {
let result = null;
const esmScriptUrl = scriptNode.attribs.src.replace(/\.js$/, '.mjs');
if (this._shouldPreload(scriptNode.attribs.src)) {
if (preloadEnabled && this._shouldPreload(scriptNode.attribs.src)) {
const preload = createElement('link', {
as: 'script',
crossorigin: 'anonymous',
Expand Down
3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/body-only/expected_output.full.html
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Expand Up @@ -2,8 +2,7 @@
<html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta data-auto charset="utf-8">
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<link data-auto rel="canonical" href=".">
</head>
<body>
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3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/body-only/expected_output.lts.html
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Expand Up @@ -2,8 +2,7 @@
<html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta data-auto charset="utf-8">
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" custom-element="amp-video" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<link data-auto rel="canonical" href=".">
</head>
<body>
Expand Down
3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/hello-world/expected_output.fast.html
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Expand Up @@ -2,8 +2,7 @@
<html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,minimum-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<link rel="canonical" href="self.html"><style amp-custom>h1 { margin: 16px; }</style>
</head>
<body>
Expand Down
3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/hello-world/expected_output.full.html
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Expand Up @@ -2,8 +2,7 @@
<html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,minimum-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<link rel="canonical" href="self.html"><style amp-custom>h1{margin:16px}</style>
</head>
<body>
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3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/hello-world/expected_output.lts.html
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Expand Up @@ -2,8 +2,7 @@
<html ⚡ i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,minimum-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<meta name="viewport" content="width=device-width,minimum-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<link rel="canonical" href="self.html"><style amp-custom>h1{margin:16px}</style>
</head>
<body>
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1 change: 0 additions & 1 deletion packages/optimizer/spec/end-to-end/hello-world/expected_output.paired.html
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Expand Up @@ -3,7 +3,6 @@
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,minimum-scale=1">
<link as="script" crossorigin="anonymous" href="https://example.com/amp/rtv/123456789000000/v0.mjs" rel="modulepreload">
<meta name="runtime-host" content="https://example.com">
<meta name="amp-geo-api" content="/geo"><style amp-runtime i-amphtml-version="123456789000000">/* example.com v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script async src="https://example.com/amp/rtv/123456789000000/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0.js" crossorigin="anonymous"></script><script async custom-element="amp-experiment" src="https://example.com/amp/rtv/123456789000000/v0/amp-experiment-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0/amp-experiment-0.1.js" crossorigin="anonymous" custom-element="amp-experiment"></script><script async custom-element="amp-analytics" src="https://example.com/amp/rtv/123456789000000/v0/amp-analytics-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async custom-element="amp-video" src="https://example.com/amp/rtv/123456789000000/v0/amp-video-0.1.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://example.com/amp/rtv/123456789000000/v0/amp-video-0.1.js" crossorigin="anonymous" custom-element="amp-video"></script>
<link rel="canonical" href="self.html"><style amp-custom>h1{margin:16px}</style>
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3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/markdown/expected_output.full.html
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<html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta data-auto charset="utf-8">
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script>
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script>
<link data-auto rel="canonical" href=".">
</head>
<body>
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3 changes: 1 addition & 2 deletions packages/optimizer/spec/end-to-end/markdown/expected_output.lts.html
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Expand Up @@ -2,8 +2,7 @@
<html amp i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1">
<head>
<meta data-auto charset="utf-8">
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<link as="script" crossorigin="anonymous" href="https://cdn.ampproject.org/lts/v0.mjs" rel="modulepreload"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script>
<meta data-auto name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"><style amp-runtime i-amphtml-version="123456789000000">/* ampproject.org/rtv v0.css */amp-img[i-amphtml-ssr]:not(.i-amphtml-element):not([layout=container])>*{display: block;}</style><script data-auto async src="https://cdn.ampproject.org/lts/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/lts/v0.js" crossorigin="anonymous"></script>
<link data-auto rel="canonical" href=".">
</head>
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