Add Environment bootstrap system

Author: AJCStriker

package.json

@@ -1,6 +1,6 @@
 {
   "name": "strontium",
-  "version": "2.7.1",
+  "version": "2.7.2",
   "description": "Strontium is a TypeScript toolkit for High Performance API servers built for Production not Projects.",
   "main": "lib/src/index.js",
   "types": "lib/src/index.d.ts",

src/bootstrap/drivers/Environment.ts

@@ -0,0 +1,35 @@
+import { Container } from "inversify"
+import { Process } from "../../runtime"
+import { ObjectValidator, ValidatedObject, isObject } from "../../validation"
+
+export class Environment<O extends ObjectValidator> implements Process {
+    private validatedEnvironment?: ValidatedObject<O>
+
+    constructor(private validator: O) {}
+
+    public getKey<K extends keyof ValidatedObject<O>>(key: K): O[K] {
+        if (this.validatedEnvironment !== undefined) {
+            return this.validatedEnvironment[key]
+        } else {
+            throw new Error(
+                "An environment value was accessed before the Environment container completed initialization."
+            )
+        }
+    }
+
+    public isHealthy(): boolean {
+        return this.validatedEnvironment !== undefined
+    }
+
+    public async startup(container: Container): Promise<void> {
+        container.bind(Environment).toConstantValue(this)
+
+        this.validatedEnvironment = await isObject(this.validator)(process.env)
+    }
+
+    public async shutdown(container: Container): Promise<void> {
+        container.unbind(Environment)
+
+        this.validatedEnvironment = undefined
+    }
+}

src/bootstrap/index.ts

@@ -0,0 +1 @@
+export * from "./drivers/Environment"

src/index.ts

@@ -1,3 +1,4 @@
+export * from "./bootstrap"
 export * from "./cryptography"
 export * from "./datastore"
 export * from "./errors"