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feat: Migrates 3 data layer samples (#807)
* feat: Migrates data layer samples. Change-Id: Ic8e945adfbc592ae242d8055a394ac8a04e24994 * Incorporate review comments * Incorporate review comments Refactor earthquake data handling to store data for later use if innerMap is not initialized. * Rename map CSS selector to gmp-map * Incorporate review comments * Incorporate review comments Refactor earthquake data handling to store data for later use if the map is not initialized. * Rename #map to gmp-map in style.css * Incorporate review comments * Rename CSS selector from #map to gmp-map * Refactor eqfeed_callback to use window scope * Refactor eqfeed_callback to use window object * Change script type to module for quakes.geo.json * Update index.html * Update index.ts * Refactor earthquake data handling and callback function * Remove earthquake data loading script Removed the script tag that loads earthquake data in JSONP format from the USGS feed.
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‎samples/layer-data-quakes-red/README.md‎

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# Google Maps JavaScript Sample
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This sample is generated from @googlemaps/js-samples located at
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https://github.com/googlemaps-samples/js-api-samples.
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## Setup
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### Before starting run:
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`npm i`
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### Run an example on a local web server
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`cd samples/layer-data-quakes-red`
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`npm start`
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### Build an individual example
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`cd samples/layer-data-quakes-red`
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`npm run build`
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From 'samples':
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`npm run build --workspace=layer-data-quakes-red/`
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### Build all of the examples.
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From 'samples':
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`npm run build-all`
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### Run lint to check for problems
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`cd samples/layer-data-quakes-red`
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`npx eslint index.ts`
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## Feedback
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For feedback related to this sample, please open a new issue on
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[GitHub](https://github.com/googlemaps-samples/js-api-samples/issues).

‎samples/layer-data-quakes-red/index.html‎

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<!doctype html>
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<!--
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@license
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Copyright 2019 Google LLC. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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-->
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<!-- [START maps_layer_data_quakes_red] -->
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<html>
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<head>
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<title>Simple Data Layer: Earthquakes</title>
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<link rel="stylesheet" type="text/css" href="./style.css" />
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<script type="module" src="./index.js"></script>
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<!-- prettier-ignore -->
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<script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
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({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
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</head>
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<body>
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<gmp-map center="20,-160" zoom="2"></gmp-map>
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</body>
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</html>
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<!-- [END maps_layer_data_quakes_red] -->

‎samples/layer-data-quakes-red/index.ts‎

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/**
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* @license
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* Copyright 2019 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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// [START maps_layer_data_quakes_red]
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let innerMap;
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async function initMap() {
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(await google.maps.importLibrary("maps")) as google.maps.MapsLibrary;
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const mapElement = document.querySelector(
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"gmp-map"
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) as google.maps.MapElement;
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innerMap = mapElement.innerMap;
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// Get the earthquake data (JSONP format)
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// This feed is a copy from the USGS feed, you can find the originals here:
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// http://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php
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const script = document.createElement("script");
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script.setAttribute(
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"src",
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"quakes.geo.json"
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);
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document.getElementsByTagName("head")[0].appendChild(script);
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// Add a basic style.
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innerMap.data.setStyle((feature) => {
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const mag = Math.exp(parseFloat(feature.getProperty("mag") as string)) * 0.1;
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return /** @type {google.maps.Data.StyleOptions} */ {
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icon: {
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path: google.maps.SymbolPath.CIRCLE,
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scale: mag,
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fillColor: "#f00",
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fillOpacity: 0.35,
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strokeWeight: 0,
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},
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};
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});
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}
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// Defines the callback function referenced in the jsonp file.
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function eqfeed_callback(data: any) {
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innerMap.data.addGeoJson(data);
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}
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window.eqfeed_callback = eqfeed_callback;
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initMap();
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// [END maps_layer_data_quakes_red]

‎samples/layer-data-quakes-red/package.json‎

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{
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"name": "@js-api-samples/layer-data-quakes-red",
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"version": "1.0.0",
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"scripts": {
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"build": "tsc && bash ../jsfiddle.sh layer-data-quakes-red && bash ../app.sh layer-data-quakes-red && bash ../docs.sh layer-data-quakes-red && npm run build:vite --workspace=. && bash ../dist.sh layer-data-quakes-red",
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"test": "tsc && npm run build:vite --workspace=.",
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"start": "tsc && vite build --base './' && vite",
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"build:vite": "vite build --base './'",
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"preview": "vite preview"
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},
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"dependencies": {
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}
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}

‎samples/layer-data-quakes-red/public/quakes.geo.json‎

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‎samples/layer-data-quakes-red/style.css‎

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/**
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* @license
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* Copyright 2019 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* [START maps_layer_data_quakes_red] */
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/*
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* Always set the map height explicitly to define the size of the div element
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* that contains the map.
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*/
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gmp-map {
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height: 100%;
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}
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/*
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* Optional: Makes the sample page fill the window.
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*/
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html,
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body {
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height: 100%;
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margin: 0;
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padding: 0;
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}
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/* [END maps_layer_data_quakes_red] */

‎samples/layer-data-quakes-red/tsconfig.json‎

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{
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"compilerOptions": {
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"module": "esnext",
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"target": "esnext",
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"strict": true,
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"noImplicitAny": false,
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"lib": [
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"es2015",
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"esnext",
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"es6",
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"dom",
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"dom.iterable"
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],
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"moduleResolution": "Node",
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"jsx": "preserve"
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}
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}

‎samples/layer-data-quakes-simple/README.md‎

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# Google Maps JavaScript Sample
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This sample is generated from @googlemaps/js-samples located at
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https://github.com/googlemaps-samples/js-api-samples.
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## Setup
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### Before starting run:
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`npm i`
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### Run an example on a local web server
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`cd samples/layer-data-quakes-simple`
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`npm start`
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### Build an individual example
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`cd samples/layer-data-quakes-simple`
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`npm run build`
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From 'samples':
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`npm run build --workspace=layer-data-quakes-simple/`
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### Build all of the examples.
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From 'samples':
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`npm run build-all`
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### Run lint to check for problems
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`cd samples/layer-data-quakes-simple`
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`npx eslint index.ts`
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## Feedback
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For feedback related to this sample, please open a new issue on
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[GitHub](https://github.com/googlemaps-samples/js-api-samples/issues).

‎samples/layer-data-quakes-simple/index.html‎

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<!DOCTYPE html>
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<!--
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@license
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Copyright 2019 Google LLC. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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-->
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<!-- [START maps_layer_data_quakes_simple] -->
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<html>
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<head>
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<title>Default Data Layer: Earthquakes</title>
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<link rel="stylesheet" type="text/css" href="./style.css" />
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<script type="module" src="./index.js"></script>
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<!-- prettier-ignore -->
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<script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
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({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
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</head>
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<body>
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<gmp-map center="20,-160" zoom="3"></gmp-map>
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</body>
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</html>
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<!-- [END maps_layer_data_quakes_simple] -->

‎samples/layer-data-quakes-simple/index.ts‎

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/**
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* @license
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* Copyright 2019 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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// [START maps_layer_data_quakes_simple]
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let innerMap;
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let earthquakeData;
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async function initMap() {
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(await google.maps.importLibrary("maps")) as google.maps.MapsLibrary;
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const mapElement = document.querySelector(
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"gmp-map"
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) as google.maps.MapElement;
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innerMap = mapElement.innerMap;
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// Get the earthquake data (JSONP format)
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// This feed is a copy from the USGS feed, you can find the originals here:
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// http://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php
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const script = document.createElement("script");
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script.setAttribute(
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"src",
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"quakes.geo.json"
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);
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document.getElementsByTagName("head")[0].appendChild(script);
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}
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// Defines the callback function referenced in the jsonp file.
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function eqfeed_callback(data: any) {
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innerMap.data.addGeoJson(data);
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}
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window.eqfeed_callback = eqfeed_callback;
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initMap();
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// [END maps_layer_data_quakes_simple]

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