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<!DOCTYPE html><html class="default" lang="en" data-base=".."><head><meta charset="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>@opentelemetry/context-zone-peer-dep | OpenTelemetry SDK</title><meta name="description" content="Documentation for OpenTelemetry SDK"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script><script async src="../assets/hierarchy.js" id="tsd-hierarchy-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search"><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">OpenTelemetry SDK</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">OpenTelemetry SDK</a></li><li><a href="_opentelemetry_context-zone-peer-dep.html">@opentelemetry/context-zone-peer-dep</a></li></ul><h1>Module @opentelemetry/context-zone-peer-dep</h1></div><section class="tsd-panel tsd-typography"><a id="opentelemetry-context-zone-peer-dependency" class="tsd-anchor"></a><h1 class="tsd-anchor-link">OpenTelemetry Context Zone Peer Dependency<a href="#opentelemetry-context-zone-peer-dependency" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h1><p><a href="https://www.npmjs.com/package/@opentelemetry/context-zone-peer-dep"><img src="https://badge.fury.io/js/%40opentelemetry%2Fcontext-zone-peer-dep.svg" alt="NPM Published Version"></a>
<a href="https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat"><img src="https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat" alt="Apache License"></a></p>
<p>This module provides <em>Zone Context Manager with a peer dependency for <a href="https://www.npmjs.com/package/zone.js">zone-js</a></em> for Web applications.
If you use Angular you already have the <a href="https://www.npmjs.com/package/zone.js">zone-js</a> and you should use this package.
If you don't have your own <a href="https://www.npmjs.com/package/zone.js">zone-js</a> please use <a href="https://www.npmjs.com/package/@opentelemetry/context-zone">@opentelemetry/context-zone</a></p>
<a id="installation" class="tsd-anchor"></a><h2 class="tsd-anchor-link">Installation<a href="#installation" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><p>Please note that due to an issue with <code>zone.js</code>, the <code>ZoneContextManager</code> does not work with JS code targeting <code>ES2017+</code>.
In order to use the <code>ZoneContextManager</code>, please transpile back to <code>ES2015</code>.</p>
<pre><code class="bash"><span class="hl-0">npm</span><span class="hl-1"> </span><span class="hl-2">install</span><span class="hl-1"> </span><span class="hl-3">--save</span><span class="hl-1"> </span><span class="hl-2">@opentelemetry/context-zone-peer-dep</span>
</code><button type="button">Copy</button></pre>
<a id="usage" class="tsd-anchor"></a><h2 class="tsd-anchor-link">Usage<a href="#usage" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><pre><code class="js"><span class="hl-7">import</span><span class="hl-1"> { </span><span class="hl-6">context</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1"> } </span><span class="hl-7">from</span><span class="hl-1"> </span><span class="hl-2">&#39;@opentelemetry/api&#39;</span><span class="hl-1">;</span><br/><span class="hl-7">import</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-6">ConsoleSpanExporter</span><span class="hl-1">,</span><br/><span class="hl-1"> </span><span class="hl-6">SimpleSpanProcessor</span><span class="hl-1">,</span><br/><span class="hl-1"> </span><span class="hl-6">WebTracerProvider</span><span class="hl-1">,</span><br/><span class="hl-1">} </span><span class="hl-7">from</span><span class="hl-1"> </span><span class="hl-2">&#39;@opentelemetry/sdk-trace-web&#39;</span><span class="hl-1">;</span><br/><span class="hl-7">import</span><span class="hl-1"> { </span><span class="hl-6">ZoneContextManager</span><span class="hl-1"> } </span><span class="hl-7">from</span><span class="hl-1"> </span><span class="hl-2">&#39;@opentelemetry/context-zone-peer-dep&#39;</span><span class="hl-1">;</span><br/><br/><span class="hl-3">const</span><span class="hl-1"> </span><span class="hl-4">providerWithZone</span><span class="hl-1"> = </span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">WebTracerProvider</span><span class="hl-1">({</span><br/><span class="hl-1"> </span><span class="hl-6">spanProcessors:</span><span class="hl-1"> [</span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">SimpleSpanProcessor</span><span class="hl-1">(</span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">ConsoleSpanExporter</span><span class="hl-1">())]</span><br/><span class="hl-1">});</span><br/><span class="hl-6">providerWithZone</span><span class="hl-1">.</span><span class="hl-0">register</span><span class="hl-1">({</span><br/><span class="hl-1"> </span><span class="hl-6">contextManager:</span><span class="hl-1"> </span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">ZoneContextManager</span><span class="hl-1">()</span><br/><span class="hl-1">});</span><br/><br/><span class="hl-5">// Example how the ZoneContextManager keeps the reference to the correct context during async operations</span><br/><span class="hl-3">const</span><span class="hl-1"> </span><span class="hl-4">webTracerWithZone</span><span class="hl-1"> = </span><span class="hl-6">providerWithZone</span><span class="hl-1">.</span><span class="hl-0">getTracer</span><span class="hl-1">(</span><span class="hl-2">&#39;default&#39;</span><span class="hl-1">);</span><br/><span class="hl-3">const</span><span class="hl-1"> </span><span class="hl-4">span1</span><span class="hl-1"> = </span><span class="hl-6">webTracerWithZone</span><span class="hl-1">.</span><span class="hl-0">startSpan</span><span class="hl-1">(</span><span class="hl-2">&#39;foo1&#39;</span><span class="hl-1">);</span><br/><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">with</span><span class="hl-1">(</span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">setSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">(), </span><span class="hl-6">span1</span><span class="hl-1">, () </span><span class="hl-3">=&gt;</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-6">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">&#39;Current span is span1&#39;</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">getSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">()) === </span><span class="hl-6">span1</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-0">setTimeout</span><span class="hl-1">(() </span><span class="hl-3">=&gt;</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-3">const</span><span class="hl-1"> </span><span class="hl-4">span2</span><span class="hl-1"> = </span><span class="hl-6">webTracerWithZone</span><span class="hl-1">.</span><span class="hl-0">startSpan</span><span class="hl-1">(</span><span class="hl-2">&#39;foo2&#39;</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-6">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">&#39;Current span is span1&#39;</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">getSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">()) === </span><span class="hl-6">span1</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">with</span><span class="hl-1">(</span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">setSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">(), </span><span class="hl-6">span2</span><span class="hl-1">, () </span><span class="hl-3">=&gt;</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-6">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">&#39;Current span is span2&#39;</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">getSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">()) === </span><span class="hl-6">span2</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-0">setTimeout</span><span class="hl-1">(() </span><span class="hl-3">=&gt;</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-6">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">&#39;Current span is span2&#39;</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">getSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">()) === </span><span class="hl-6">span2</span><span class="hl-1">);</span><br/><span class="hl-1"> }, </span><span class="hl-9">500</span><span class="hl-1">);</span><br/><span class="hl-1"> });</span><br/><span class="hl-1"> </span><span class="hl-5">// there is a timeout which still keeps span2 active</span><br/><span class="hl-1"> </span><span class="hl-6">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">&#39;Current span is span2&#39;</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">getSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">()) === </span><span class="hl-6">span2</span><span class="hl-1">);</span><br/><span class="hl-1"> }, </span><span class="hl-9">500</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-6">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">&#39;Current span is span1&#39;</span><span class="hl-1">, </span><span class="hl-6">trace</span><span class="hl-1">.</span><span class="hl-0">getSpan</span><span class="hl-1">(</span><span class="hl-6">context</span><span class="hl-1">.</span><span class="hl-0">active</span><span class="hl-1">()) === </span><span class="hl-6">span1</span><span class="hl-1">);</span><br/><span class="hl-1">});</span><br/>
</code><button type="button">Copy</button></pre>
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