Add options builder

src/options.js

@@ -0,0 +1,28 @@
+/**
+ * @typedef MongoTenantOptions
+ * @property {string} tenantIdGetter
+ * @property {string} accessorMethod
+ * @property {*} tenantIdType
+ * @property {string} tenantIdKey
+ * @property {boolean} requireTenantId
+ */
+
+/**
+ * Sanitize plugin options
+ * @param {object} [input]
+ * @param {string} [input.tenantIdGetter=tenantId]
+ * @param {string} [input.accessorMethod=String]
+ * @param {*} [input.tenantIdType=byTenant]
+ * @param {string} [input.tenantIdKey=getTenantId]
+ * @param {string} [input.requireTenantId=true]
+ * @returns {MongoTenantOptions}
+ */
+const options = (input = {}) => ({
+  tenantIdKey: input.tenantIdKey || 'tenantId',
+  tenantIdType: input.tenantIdType || String,
+  accessorMethod: input.accessorMethod || 'byTenant',
+  tenantIdGetter: input.tenantIdGetter || 'getTenantId',
+  requireTenantId: input.requireTenantId === true,
+});
+
+module.exports = options;

src/options.test.js

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+const options = require('./options');
+
+describe('options', () => {
+  const assertCompleteOptions = (value) => {
+    expect(value).toHaveProperty('tenantIdKey');
+    expect(value).toHaveProperty('tenantIdType');
+    expect(value).toHaveProperty('accessorMethod');
+    expect(value).toHaveProperty('tenantIdGetter');
+    expect(value).toHaveProperty('requireTenantId');
+  };
+
+  it('creates default options', () => {
+    const result = options();
+    assertCompleteOptions(result);
+  });
+
+  it('adds default option values', () => {
+    const result = options({tenantIdKey: 'tenant_id'});
+    assertCompleteOptions(result);
+  });
+});