feat: add snjs package

packages/snjs/jest.config.js

@@ -0,0 +1,37 @@
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const base = require('../../node_modules/@standardnotes/config/src/jest.json');
+
+module.exports = {
+  ...base,
+  moduleNameMapper: {
+    '@Lib/(.*)': '<rootDir>/lib/$1',
+    '@Services/(.*)': '<rootDir>/lib/Services/$1',
+  },
+  globals: {
+    'ts-jest': {
+      tsconfig: '<rootDir>/lib/tsconfig.json',
+      isolatedModules: true,
+      babelConfig: 'babel.config.js',
+    },
+  },
+  clearMocks: true,
+  collectCoverageFrom: ['lib/**/{!(index),}.ts'],
+  coverageDirectory: 'coverage',
+  coverageReporters: ['json', 'text', 'html'],
+  resetMocks: true,
+  resetModules: true,
+  roots: ['<rootDir>/lib'],
+  setupFiles: ['<rootDir>/jest-global.ts'],
+  setupFilesAfterEnv: [],
+  transform: {
+    '^.+\\.(ts|js)?$': 'ts-jest',
+  },
+  coverageThreshold: {
+    global: {
+      branches: 13,
+      functions: 22,
+      lines: 27,
+      statements: 28,
+    },
+  },
+}