Initial Commit

node_modules/@firebase/component/dist/index.esm2017.js

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+import { Deferred } from '@firebase/util';
+
+/**
+ * Component for service name T, e.g. `auth`, `auth-internal`
+ */
+class Component {
+    /**
+     *
+     * @param name The public service name, e.g. app, auth, firestore, database
+     * @param instanceFactory Service factory responsible for creating the public interface
+     * @param type whether the service provided by the component is public or private
+     */
+    constructor(name, instanceFactory, type) {
+        this.name = name;
+        this.instanceFactory = instanceFactory;
+        this.type = type;
+        this.multipleInstances = false;
+        /**
+         * Properties to be added to the service namespace
+         */
+        this.serviceProps = {};
+        this.instantiationMode = "LAZY" /* LAZY */;
+    }
+    setInstantiationMode(mode) {
+        this.instantiationMode = mode;
+        return this;
+    }
+    setMultipleInstances(multipleInstances) {
+        this.multipleInstances = multipleInstances;
+        return this;
+    }
+    setServiceProps(props) {
+        this.serviceProps = props;
+        return this;
+    }
+}
+
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const DEFAULT_ENTRY_NAME = '[DEFAULT]';
+
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Provider for instance for service name T, e.g. 'auth', 'auth-internal'
+ * NameServiceMapping[T] is an alias for the type of the instance
+ */
+class Provider {
+    constructor(name, container) {
+        this.name = name;
+        this.container = container;
+        this.component = null;
+        this.instances = new Map();
+        this.instancesDeferred = new Map();
+    }
+    /**
+     * @param identifier A provider can provide mulitple instances of a service
+     * if this.component.multipleInstances is true.
+     */
+    get(identifier = DEFAULT_ENTRY_NAME) {
+        // if multipleInstances is not supported, use the default name
+        const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);
+        if (!this.instancesDeferred.has(normalizedIdentifier)) {
+            const deferred = new Deferred();
+            this.instancesDeferred.set(normalizedIdentifier, deferred);
+            // If the service instance is available, resolve the promise with it immediately
+            try {
+                const instance = this.getOrInitializeService(normalizedIdentifier);
+                if (instance) {
+                    deferred.resolve(instance);
+                }
+            }
+            catch (e) {
+                // when the instance factory throws an exception during get(), it should not cause
+                // a fatal error. We just return the unresolved promise in this case.
+            }
+        }
+        return this.instancesDeferred.get(normalizedIdentifier).promise;
+    }
+    getImmediate(options) {
+        const { identifier, optional } = Object.assign({ identifier: DEFAULT_ENTRY_NAME, optional: false }, options);
+        // if multipleInstances is not supported, use the default name
+        const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);
+        try {
+            const instance = this.getOrInitializeService(normalizedIdentifier);
+            if (!instance) {
+                if (optional) {
+                    return null;
+                }
+                throw Error(`Service ${this.name} is not available`);
+            }
+            return instance;
+        }
+        catch (e) {
+            if (optional) {
+                return null;
+            }
+            else {
+                throw e;
+            }
+        }
+    }
+    getComponent() {
+        return this.component;
+    }
+    setComponent(component) {
+        if (component.name !== this.name) {
+            throw Error(`Mismatching Component ${component.name} for Provider ${this.name}.`);
+        }
+        if (this.component) {
+            throw Error(`Component for ${this.name} has already been provided`);
+        }
+        this.component = component;
+        // if the service is eager, initialize the default instance
+        if (isComponentEager(component)) {
+            try {
+                this.getOrInitializeService(DEFAULT_ENTRY_NAME);
+            }
+            catch (e) {
+                // when the instance factory for an eager Component throws an exception during the eager
+                // initialization, it should not cause a fatal error.
+                // TODO: Investigate if we need to make it configurable, because some component may want to cause
+                // a fatal error in this case?
+            }
+        }
+        // Create service instances for the pending promises and resolve them
+        // NOTE: if this.multipleInstances is false, only the default instance will be created
+        // and all promises with resolve with it regardless of the identifier.
+        for (const [instanceIdentifier, instanceDeferred] of this.instancesDeferred.entries()) {
+            const normalizedIdentifier = this.normalizeInstanceIdentifier(instanceIdentifier);
+            try {
+                // `getOrInitializeService()` should always return a valid instance since a component is guaranteed. use ! to make typescript happy.
+                const instance = this.getOrInitializeService(normalizedIdentifier);
+                instanceDeferred.resolve(instance);
+            }
+            catch (e) {
+                // when the instance factory throws an exception, it should not cause
+                // a fatal error. We just leave the promise unresolved.
+            }
+        }
+    }
+    clearInstance(identifier = DEFAULT_ENTRY_NAME) {
+        this.instancesDeferred.delete(identifier);
+        this.instances.delete(identifier);
+    }
+    // app.delete() will call this method on every provider to delete the services
+    // TODO: should we mark the provider as deleted?
+    async delete() {
+        const services = Array.from(this.instances.values());
+        await Promise.all(services
+            .filter(service => 'INTERNAL' in service)
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            .map(service => service.INTERNAL.delete()));
+    }
+    isComponentSet() {
+        return this.component != null;
+    }
+    getOrInitializeService(identifier) {
+        let instance = this.instances.get(identifier);
+        if (!instance && this.component) {
+            instance = this.component.instanceFactory(this.container, normalizeIdentifierForFactory(identifier));
+            this.instances.set(identifier, instance);
+        }
+        return instance || null;
+    }
+    normalizeInstanceIdentifier(identifier) {
+        if (this.component) {
+            return this.component.multipleInstances ? identifier : DEFAULT_ENTRY_NAME;
+        }
+        else {
+            return identifier; // assume multiple instances are supported before the component is provided.
+        }
+    }
+}
+// undefined should be passed to the service factory for the default instance
+function normalizeIdentifierForFactory(identifier) {
+    return identifier === DEFAULT_ENTRY_NAME ? undefined : identifier;
+}
+function isComponentEager(component) {
+    return component.instantiationMode === "EAGER" /* EAGER */;
+}
+
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * ComponentContainer that provides Providers for service name T, e.g. `auth`, `auth-internal`
+ */
+class ComponentContainer {
+    constructor(name) {
+        this.name = name;
+        this.providers = new Map();
+    }
+    /**
+     *
+     * @param component Component being added
+     * @param overwrite When a component with the same name has already been registered,
+     * if overwrite is true: overwrite the existing component with the new component and create a new
+     * provider with the new component. It can be useful in tests where you want to use different mocks
+     * for different tests.
+     * if overwrite is false: throw an exception
+     */
+    addComponent(component) {
+        const provider = this.getProvider(component.name);
+        if (provider.isComponentSet()) {
+            throw new Error(`Component ${component.name} has already been registered with ${this.name}`);
+        }
+        provider.setComponent(component);
+    }
+    addOrOverwriteComponent(component) {
+        const provider = this.getProvider(component.name);
+        if (provider.isComponentSet()) {
+            // delete the existing provider from the container, so we can register the new component
+            this.providers.delete(component.name);
+        }
+        this.addComponent(component);
+    }
+    /**
+     * getProvider provides a type safe interface where it can only be called with a field name
+     * present in NameServiceMapping interface.
+     *
+     * Firebase SDKs providing services should extend NameServiceMapping interface to register
+     * themselves.
+     */
+    getProvider(name) {
+        if (this.providers.has(name)) {
+            return this.providers.get(name);
+        }
+        // create a Provider for a service that hasn't registered with Firebase
+        const provider = new Provider(name, this);
+        this.providers.set(name, provider);
+        return provider;
+    }
+    getProviders() {
+        return Array.from(this.providers.values());
+    }
+}
+
+export { Component, ComponentContainer, Provider };
+//# sourceMappingURL=index.esm2017.js.map