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+# app-builder
+
+[![Actions Status](https://github.com/calebboyd/app-builder/workflows/app-builder-ci/badge.svg)](https://github.com/calebboyd/app-builder/actions)
+
+Create composable promise based middleware pipelines, using the "onion" middleware model.
+
+## Install:
+
+`npm install app-builder`
+
+## Example
+
+```javascript
+import { compose } from 'app-builder'
+
+const app = compose([
+  async function (ctx, next) {
+    ctx.value += 1
+    await next()
+    ctx.value += 4
+  },
+  async function (ctx, next) {
+    ctx.value += 2
+    await next()
+    ctx.value += 3
+  }
+]);
+
+const context = { value: '' }
+app(context).then(() => console.log(context.value)) // --> '1234'
+
+```
+
+All composed functions are also valid middleware functions.
+
+```javascript
+const superApp = compose(
+  async function (ctx, next) {
+    ctx.value += 'first'
+    await next()
+    ctx.value += 'last'
+  },
+  app
+)
+```