Separate project

Extract project from monorepo.

.npmignore

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+*.ts
+tsconfig.json

README.md

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+# Zeichen - Core
+
+Library for authoring Zeichen plugins and themes.

package.json

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+{
+  "name": "zeichen-core",
+  "description": "Library for authoring Zeichen plugins and themes.",
+  "version": "0.1.0",
+  "devDependencies": {
+    "typescript": "^4.0.3"
+  },
+  "scripts": {
+    "build": "tsc **/*.ts"
+  }
+}

src/plugin.ts

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+export type State = {
+  currentUserId: string,
+}
+
+export type Plugin<T = {}> = (config: T) => (state: State) => void

src/storage.ts

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+export default interface Storage<T> {
+  queryItems(): Promise<T[]>
+  saveItem(item: T): Promise<void>
+  deleteItem(item: T): Promise<boolean>
+}
+
+export interface Collection<T> {
+  items: T[],
+  lastModifiedBy: string,
+  lastModifiedAt: Date,
+}
+
+export type Serializer<T = unknown> = (t: T) => string
+export type Deserializer<T = unknown> = (s: string) => T
+
+export class OutOfSyncError {}

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es6",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "declaration": true,
+    "declarationDir": "./dist",
+    "emitDeclarationOnly": true,
+    "sourceMap": true,
+    "strict": false
+  },
+  "exclude": [
+    "node_modules",
+    "**/*.test.ts"
+  ],
+  "include": [
+    "**/*.ts"
+  ]
+}