Created the initial interfaces based on the architecture document

2024-10-03 14:55:10 +00:00 · 2020-05-18 11:53:21 +02:00
parent b949b6cf5e
commit 5def53180c
22 changed files with 914 additions and 14 deletions
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -8,6 +8,7 @@ module.exports = {
  plugins: [
    '@typescript-eslint',
    'prettier',
+    'eslint-plugin-tsdoc',
  ],
  extends: [
    'eslint:recommended',
@@ -20,5 +21,7 @@ module.exports = {
  rules: {
    '@typescript-eslint/no-empty-interface': 'off',
    'prettier/prettier': 'error',
+    "sort-imports": "error",
+    'tsdoc/syntax': 'error',
  },
 };
--- a/lib/ldp/http/BinaryRepresentation.ts
+++ b/lib/ldp/http/BinaryRepresentation.ts
@@ -0,0 +1,8 @@
+import { Representation } from './Representation';
+
+/**
+ * A representation containing binary data.
+ */
+export interface BinaryRepresentation extends Representation {
+  dataType: 'binary';
+}
--- a/lib/ldp/http/NamedRepresentation.ts
+++ b/lib/ldp/http/NamedRepresentation.ts
@@ -0,0 +1,9 @@
+import { Representation } from './Representation';
+import { ResourceIdentifier } from './ResourceIdentifier';
+
+export interface NamedRepresentation extends Representation {
+  /**
+   * The identifier of this representation.
+   */
+  identifier?: ResourceIdentifier;
+}
--- a/lib/ldp/http/Patch.ts
+++ b/lib/ldp/http/Patch.ts
@@ -0,0 +1,4 @@
+/**
+ * Represents the changes needed for a PATCH request.
+ */
+export interface Patch {}
--- a/lib/ldp/http/QuadRepresentation.ts
+++ b/lib/ldp/http/QuadRepresentation.ts
@@ -0,0 +1,8 @@
+import { Representation } from './Representation';
+
+/**
+ * A representation containing quads as data.
+ */
+export interface QuadRepresentation extends Representation {
+  dataType: 'quad';
+}
--- a/lib/ldp/http/Representation.ts
+++ b/lib/ldp/http/Representation.ts
@@ -0,0 +1,20 @@
+import { Readable } from 'stream';
+import { RepresentationMetadata } from './RepresentationMetadata';
+
+/**
+ * A representation of a resource.
+ */
+export interface Representation {
+  /**
+   * The corresponding metadata.
+   */
+  metadata: RepresentationMetadata;
+  /**
+   * The raw data stream for this representation.
+   */
+  data: Readable;
+  /**
+   * The data type of the contents in the data stream.
+   */
+  dataType: string;
+}
--- a/lib/ldp/http/RepresentationMetadata.ts
+++ b/lib/ldp/http/RepresentationMetadata.ts
@@ -0,0 +1,35 @@
+/**
+ * Contains metadata relevant to a representation.
+ */
+import { Quad } from 'rdf-js';
+
+export interface RepresentationMetadata {
+  /**
+   * All metadata triples of the resource.
+   */
+  raw: Quad[];
+  /**
+   * The metadata profiles.
+   */
+  profiles: string[];
+  /**
+   * Optional size of the representation.
+   */
+  byteSize?: number;
+  /**
+   * Optional content type of the representation.
+   */
+  contentType?: string;
+  /**
+   * Optional encoding of the representation.
+   */
+  encoding?: string;
+  /**
+   * Optional language of the representation.
+   */
+  language?: string;
+  /**
+   * Optional timestamp of the representation.
+   */
+  dateTime?: Date;
+}
--- a/lib/ldp/http/RepresentationPreferences.ts
+++ b/lib/ldp/http/RepresentationPreferences.ts
@@ -0,0 +1,4 @@
+/**
+ * Contains the preferences of which kind of representation is requested.
+ */
+export interface RepresentationPreferences {}
--- a/lib/ldp/http/ResourceIdentifier.ts
+++ b/lib/ldp/http/ResourceIdentifier.ts
@@ -0,0 +1,4 @@
+/**
+ * The unique identifier of a resource.
+ */
+export interface ResourceIdentifier {}
--- a/lib/ldp/operations/Operation.ts
+++ b/lib/ldp/operations/Operation.ts
@@ -0,0 +1,25 @@
+import { Representation } from '../http/Representation';
+import { RepresentationPreferences } from '../http/RepresentationPreferences';
+import { ResourceIdentifier } from '../http/ResourceIdentifier';
+
+/**
+ * A single REST operation.
+ */
+export interface Operation {
+  /**
+   * The HTTP method (GET/POST/PUT/PATCH/DELETE/etc.).
+   */
+  method: string;
+  /**
+   * Identifier of the target.
+   */
+  target: ResourceIdentifier;
+  /**
+   * Representation preferences of the response. Will be empty if there are none.
+   */
+  preferences: RepresentationPreferences;
+  /**
+   * Optional representation of the body.
+   */
+  body?: Representation;
+}
--- a/lib/ldp/operations/OperationHandler.ts
+++ b/lib/ldp/operations/OperationHandler.ts
@@ -0,0 +1,21 @@
+import { Operation } from './Operation';
+
+/**
+ * Handler for a specific operation type.
+ */
+export interface OperationHandler {
+  /**
+   * Checks if the handler supports the given operation.
+   * @param operation - The input operation.
+   *
+   * @returns A promise resolving to a boolean indicating if this handler supports the operation.
+   */
+  canHandle: (operation: Operation) => Promise<boolean>;
+  /**
+   * Handles the given operation.
+   * @param operation - The input operation.
+   *
+   * @returns A promise resolving when the operation is handled.
+   */
+  handle: (operation: Operation) => Promise<void>;
+}
--- a/lib/server/HttpHandler.ts
+++ b/lib/server/HttpHandler.ts
@@ -0,0 +1,22 @@
+import { IncomingMessage, ServerResponse } from 'http';
+
+/**
+ * An HTTP request handler.
+ */
+export interface HttpHandler {
+  /**
+   * Checks whether this handler supports the given request.
+   * @param req - The input request.
+   *
+   * @returns A promise that indicates if this request is supported after resolving.
+   */
+  canHandle: (req: Request) => Promise<boolean>;
+  /**
+   * Handles the given request.
+   * @param req - The input request.
+   * @param res - The response needed for responding to the request.
+   *
+   * @returns A promise resolving when the handling is finished.
+   */
+  handle: (req: IncomingMessage, res: ServerResponse) => Promise<void>;
+}
--- a/lib/storage/AtomicResourceStore.ts
+++ b/lib/storage/AtomicResourceStore.ts
@@ -0,0 +1,6 @@
+import { ResourceStore } from './ResourceStore';
+
+/**
+ * A {@link ResourceStore} of which all operations are atomic.
+ */
+export interface AtomicResourceStore extends ResourceStore {}
--- a/lib/storage/Conditions.ts
+++ b/lib/storage/Conditions.ts
@@ -0,0 +1,35 @@
+import { RepresentationMetadata } from '../ldp/http/RepresentationMetadata';
+
+/**
+ * The conditions of an HTTP conditional request.
+ */
+export interface Conditions {
+  /**
+   * Valid if matching any of the given ETags.
+   */
+  matchesEtag: string[];
+  /**
+   * Valid if not matching any of the given ETags.
+   */
+  notMatchesEtag: string[];
+  /**
+   * Valid if modified since the given date.
+   */
+  modifiedSince?: Date;
+  /**
+   * Valid if not modified since the given date.
+   */
+  unmodifiedSince?: Date;
+
+  /**
+   * Checks validity based on the given metadata.
+   * @param metadata - Metadata of the representation.
+   */
+  matchesMetadata: (metadata: RepresentationMetadata) => boolean;
+  /**
+   * Checks validity based on the given ETag and/org date.
+   * @param eTag - Condition based on ETag.
+   * @param lastModified - Condition based on last modified date.
+   */
+  matches: (eTag?: string, lastModified?: Date) => boolean;
+}
--- a/lib/storage/Lock.ts
+++ b/lib/storage/Lock.ts
@@ -0,0 +1,10 @@
+/**
+ * Lock used by a {@link ResourceLocker} for non-atomic operations.
+ */
+export interface Lock {
+  /**
+   * Release this lock.
+   * @returns A promise resolving when the release is finished.
+   */
+  release: () => Promise<void>;
+}
--- a/lib/storage/RepresentationConverter.ts
+++ b/lib/storage/RepresentationConverter.ts
@@ -0,0 +1,24 @@
+import { Representation } from '../ldp/http/Representation';
+import { RepresentationPreferences } from '../ldp/http/RepresentationPreferences';
+
+/**
+ * Allows converting from one resource representation to another.
+ */
+export interface RepresentationConverter {
+  /**
+   * Checks if the converter supports converting the given resource based on the given preferences.
+   * @param representation - The input representation.
+   * @param preferences - The requested representation preferences.
+   *
+   * @returns A promise resolving to a boolean representing whether this conversion can be done.
+   */
+  supports: (representation: Representation, preferences: RepresentationPreferences) => Promise<boolean>;
+  /**
+   * Converts the given representation.
+   * @param representation - The input representation to convert.
+   * @param preferences - The requested representation preferences.
+   *
+   * @returns A promise resolving to the requested representation.
+   */
+  convert: (representation: Representation, preferences: RepresentationPreferences) => Promise<Representation>;
+}
--- a/lib/storage/ResourceLocker.ts
+++ b/lib/storage/ResourceLocker.ts
@@ -0,0 +1,15 @@
+import { Lock } from './Lock';
+import { ResourceIdentifier } from '../ldp/http/ResourceIdentifier';
+
+/**
+ * Allows the locking of resources which is needed for non-atomic {@link ResourceStore}s.
+ */
+export interface ResourceLocker {
+  /**
+   * Lock the given resource.
+   * @param identifier - Identifier of the resource that needs to be locked.
+   *
+   * @returns A promise containing the lock on the resource.
+   */
+  acquire: (identifier: ResourceIdentifier) => Promise<Lock>;
+}
--- a/lib/storage/ResourceMapper.ts
+++ b/lib/storage/ResourceMapper.ts
@@ -0,0 +1,22 @@
+import { RepresentationMetadata } from '../ldp/http/RepresentationMetadata';
+
+/**
+ * Supports mapping a file to an URL and back.
+ */
+export interface ResourceMapper {
+  /**
+   * Maps the given file to an URL.
+   * @param file - The input file.
+   *
+   * @returns A promise resolving to the corresponding URL and metadata of the representation.
+   */
+  mapFilePathToUrl: (file: File) => Promise<{ url: URL; metadata: RepresentationMetadata }>;
+  /**
+   * Maps the given URL and metadata to a file.
+   * @param url - The input URL.
+   * @param metadata - The representation metadata.
+   *
+   * @returns A promise resolving to the corresponding file.
+   */
+  mapUrlToFilePath: (url: URL, metadata: RepresentationMetadata) => Promise<File>;
+}
--- a/lib/storage/ResourceStore.ts
+++ b/lib/storage/ResourceStore.ts
@@ -0,0 +1,76 @@
+import { Conditions } from './Conditions';
+import { Patch } from '../ldp/http/Patch';
+import { Representation } from '../ldp/http/Representation';
+import { RepresentationPreferences } from '../ldp/http/RepresentationPreferences';
+import { ResourceIdentifier } from '../ldp/http/ResourceIdentifier';
+
+/**
+ * A ResourceStore represents a collection of resources.
+ * It has been designed such that each of its methods
+ * can be implemented in an atomic way:  for each CRUD operation, only one
+ * dedicated method needs to be called. A fifth method enables the optimization
+ * of partial updates with PATCH. It is up to the implementer of the interface to
+ * (not) make an implementation atomic.
+ */
+export interface ResourceStore {
+  /**
+   * Read a resource.
+   * @param identifier - Identifier of the resource to read.
+   * @param preferences - Representation preferences.
+   * @param conditions - Optional conditions.
+   *
+   * @returns A promise containing the representation.
+   */
+  getRepresentation: (
+    identifier: ResourceIdentifier,
+    preferences: RepresentationPreferences,
+    conditions?: Conditions,
+  ) => Promise<Representation>;
+
+  /**
+   * Create a resource.
+   * @param container - Container in which to create a resource.
+   * @param representation - Representation of the new resource
+   * @param conditions - Optional conditions.
+   *
+   * @returns A promise containing the new identifier.
+   */
+  addResource: (
+    container: ResourceIdentifier,
+    representation: Representation,
+    conditions?: Conditions,
+  ) => Promise<ResourceIdentifier>;
+
+  /**
+   * Fully update a resource.
+   * @param identifier - Identifier of resource to update.
+   * @param representation - New representation of the resource.
+   * @param conditions - Optional conditions.
+   *
+   * @returns A promise resolving when the update is finished.
+   */
+  setRepresentation: (
+    identifier: ResourceIdentifier,
+    representation: Representation,
+    conditions?: Conditions,
+  ) => Promise<void>;
+
+  /**
+   * Delete a resource.
+   * @param identifier - Identifier of resource to delete.
+   * @param conditions - Optional conditions.
+   *
+   * @returns A promise resolving when the delete is finished.
+   */
+  deleteResource: (identifier: ResourceIdentifier, conditions?: Conditions) => Promise<void>;
+
+  /**
+   * Partially update a resource.
+   * @param identifier - Identifier of resource to update.
+   * @param patch - Description of which parts to update.
+   * @param conditions - Optional conditions.
+   *
+   * @returns A promise resolving when the update is finished.
+   */
+  modifyResource: (identifier: ResourceIdentifier, patch: Patch, conditions?: Conditions) => Promise<void>;
+}
--- a/package-lock.json
+++ b/package-lock.json
@@ -606,6 +606,71 @@
        "chalk": "^4.0.0"
      }
    },
+    "@microsoft/tsdoc": {
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+      "dev": true
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+      "dev": true,
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+          "dev": true,
+          "requires": {
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+            "uri-js": "^4.2.2"
+          }
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+          "dev": true,
+          "requires": {
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+          }
+        }
+      }
+    },
+    "@rdfjs/data-model": {
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+      "requires": {
+        "@types/rdf-js": "^2.0.1"
+      },
+      "dependencies": {
+        "@types/rdf-js": {
+          "version": "2.0.12",
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+          "requires": {
+            "@types/node": "*"
+          }
+        }
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+    },
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@@ -665,18 +730,60 @@
        "@babel/types": "^7.3.0"
      }
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+      "requires": {
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      "dev": true
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+      "dev": true,
+      "requires": {
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@@ -3814,6 +4224,14 @@
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@@ -4075,6 +4503,15 @@
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+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.0.tgz",
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+        "http-errors": "1.7.2",
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@@ -4364,8 +4817,7 @@
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@@ -4379,8 +4831,7 @@
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-      "dev": true
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@@ -4538,6 +4989,59 @@
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      "dev": true
    },
+    "send": {
+      "version": "0.17.1",
+      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
+      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
+      "requires": {
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "destroy": "~1.0.4",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
+        "fresh": "0.5.2",
+        "http-errors": "~1.7.2",
+        "mime": "1.6.0",
+        "ms": "2.1.1",
+        "on-finished": "~2.3.0",
+        "range-parser": "~1.2.1",
+        "statuses": "~1.5.0"
+      },
+      "dependencies": {
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+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          },
+          "dependencies": {
+            "ms": {
+              "version": "2.0.0",
+              "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+              "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+            }
+          }
+        },
+        "ms": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+        }
+      }
+    },
+    "serve-static": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.1.tgz",
+      "integrity": "sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==",
+      "requires": {
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "parseurl": "~1.3.3",
+        "send": "0.17.1"
+      }
+    },
    "set-blocking": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
@@ -4567,6 +5071,11 @@
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+    "setprototypeof": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
+      "integrity": "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="
+    },
    "shebang-command": {
      "version": "1.2.0",
      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
@@ -4925,6 +5434,11 @@
        }
      }
    },
+    "statuses": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
+      "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
+    },
    "stealthy-require": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/stealthy-require/-/stealthy-require-1.1.1.tgz",
@@ -5172,6 +5686,11 @@
        "is-number": "^7.0.0"
      }
    },
+    "toidentifier": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
+      "integrity": "sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw=="
+    },
    "tough-cookie": {
      "version": "3.0.1",
      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-3.0.1.tgz",
@@ -5261,6 +5780,15 @@
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      "dev": true
    },
+    "type-is": {
+      "version": "1.6.18",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
+      "integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
+      "requires": {
+        "media-typer": "0.3.0",
+        "mime-types": "~2.1.24"
+      }
+    },
    "typedarray": {
      "version": "0.0.6",
      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
@@ -5294,6 +5822,11 @@
        "set-value": "^2.0.1"
      }
    },
+    "unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+    },
    "unset-value": {
      "version": "1.0.0",
      "resolved": "https://registry.npmjs.org/unset-value/-/unset-value-1.0.0.tgz",
@@ -5361,6 +5894,11 @@
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      "dev": true
    },
+    "utils-merge": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+    },
    "uuid": {
      "version": "7.0.3",
      "resolved": "https://registry.npmjs.org/uuid/-/uuid-7.0.3.tgz",
@@ -5403,6 +5941,11 @@
        "spdx-expression-parse": "^3.0.0"
      }
    },
+    "vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+    },
    "verror": {
      "version": "1.10.0",
      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
--- a/package.json
+++ b/package.json
@@ -10,14 +10,19 @@
    "prepare": "npm run lint && npm run build",
    "test": "jest"
  },
-  "devDependencies": {
+  "dependencies": {
+    "@rdfjs/data-model": "^1.1.2",
    "@types/jest": "^25.2.1",
    "@types/node": "^14.0.1",
+    "@types/rdf-js": "^3.0.0"
+  },
+  "devDependencies": {
    "@typescript-eslint/eslint-plugin": "^2.33.0",
    "@typescript-eslint/parser": "^2.33.0",
    "eslint": "^7.0.0",
    "eslint-config-prettier": "^6.11.0",
    "eslint-plugin-prettier": "^3.1.3",
+    "eslint-plugin-tsdoc": "^0.2.4",
    "jest": "^26.0.1",
    "pre-commit": "^1.2.2",
    "prettier": "^2.0.5",
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,13 +3,14 @@
    "module": "commonjs",
    "target": "es2017",
    "newLine": "lf",
+    "alwaysStrict": true,
+    "declaration": true,
+    "inlineSources": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "preserveConstEnums": true,
-    "sourceMap": true,
-    "inlineSources": true,
-    "declaration": true
+    "sourceMap": true
  },
  "include": [
    "lib/**/*.ts",