Initial commit

di/src/type/DependencyKey.ts

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+import Instantiable from './Instantiable.ts'
+const DEPENDENCY_KEYS_METADATA_KEY = 'daton:di:dependencyKeys.ts'
+type DependencyKey = Instantiable<any> | string
+export { DependencyKey, DEPENDENCY_KEYS_METADATA_KEY }

di/src/type/DependencyRequirement.ts

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+import { DependencyKey } from './DependencyKey.ts'
+
+interface DependencyRequirement {
+    param_index: number,
+    key: DependencyKey,
+    overridden: boolean,
+}
+
+export { DependencyRequirement }

di/src/type/Instantiable.ts

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+export default interface Instantiable<T> {
+    new(...args: any[]): T
+}
+
+const isInstantiable = (what: any): what is Instantiable<any> => {
+    return (typeof what === 'object' || typeof what === 'function') && 'constructor' in what && typeof what.constructor === 'function'
+}
+
+export { isInstantiable }