diff --git a/package.json b/package.json
index 4564858..909ca46 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   },
   "type": "module",
   "name": "linkedin-api-js",
-  "version": "1.0.0-3",
+  "version": "1.0.0-4",
   "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
diff --git a/src/types/index.d.ts b/src/types/index.d.ts
new file mode 100644
index 0000000..be44e1d
--- /dev/null
+++ b/src/types/index.d.ts
@@ -0,0 +1,200 @@
+
+export class LinkedInProfile {
+    private APIRef: linkedInAPIClass;
+
+    /**
+     * Constructor to create a LinkedInProfile instance.
+     * @param jsonData Data used to initialize the profile properties.
+     * @param apiRef Reference to an instance of linkedInAPIClass used for API calls.
+     */
+    constructor(jsonData: {
+        title?: { text: string },
+        navigationUrl?: string,
+        trackingUrn?: string,
+        entityUrn?: string,
+        insightsResolutionResults?: Array<{simpleInsight?: {title?: {text: string}}}>
+        primarySubtitle?: { text: string },
+        secondarySubtitle?: { text: string },
+        bserpEntityNavigationalUrl?: string,
+    }, apiRef: linkedInAPIClass);
+
+    /**
+     * Retrieves the contact information for the LinkedIn profile.
+     * @returns A Promise that resolves to an object containing various contact information.
+     */
+    getContactInfo(): Promise<{
+        websites: Array<{ label: string, category: string, url: string }>,
+        emailAddress: string,
+        phoneNumbers: string[],
+        weChatContactInfo: any,
+        twitterHandles: string[],
+        instantMessengers: any[]
+    }>;
+
+    /**
+     * Parses the services offered by the profile from insights data.
+     * @param insights Array containing insights data.
+     * @returns A string describing the services if found, otherwise an empty string.
+     */
+    parseServices(insights: Array<{
+        simpleInsight?: {
+            title?: { text: string }
+        }
+    }>): string;
+
+    // Public properties inferred from constructor
+    name: string;
+    entityNameJoined: string;
+    profileUrl: string;
+    trackingUrn: string;
+    entityUrn: string;
+    jobServices: string;
+    primarySubtitle: string;
+    secondarySubtitle: string;
+    bserpEntityNavigationalUrl: string;
+}
+
+
+export class Company {
+    private APIRef: linkedInAPIClass;
+
+    /**
+     * Constructor to create a Company instance.
+     * @param data Data used to initialize the company properties.
+     * @param APIRef Reference to an instance of linkedInAPIClass used for API calls.
+     */
+    constructor(data: {
+        title: { text: string },
+        entityUrn: string,
+        navigationUrl: string
+    }, APIRef: linkedInAPIClass);
+
+    /**
+     * Retrieves the employees of a company, either as LinkedInProfile instances or raw JSON.
+     * @param limit The maximum number of employee profiles to retrieve, ceiled to the nearest multiple of 50.
+     * @param raw Whether to return raw JSON data instead of LinkedInProfile instances.
+     * @returns A Promise resolving to an array of LinkedInProfile instances or raw JSON, depending on the raw parameter.
+     */
+    getEmployees(limit?: number, raw?: boolean): Promise<LinkedInProfile[] | any[]>;
+
+    /**
+     * Retrieves information about the company.
+     * @returns A Promise resolving to the company information as JSON.
+     */
+    getInfo(): Promise<any>;
+
+    /**
+     * Checks if the necessary properties for a complete company profile have been set.
+     * @returns true if all required properties are present, false otherwise.
+     */
+    checkIfCompleted(): boolean;
+
+    // Public properties inferred from constructor
+    name: string;
+    urn: string;
+    url: string;
+}
+
+
+// misc
+
+/**
+ * Class representing a type of reaction and its count.
+ */
+export class ReactionTypeCount {
+    constructor(params: { count: number; reactionType: string; });
+
+    count: number;
+    reactionType: string;
+}
+
+/**
+ * Class representing the counts of social activities such as likes and comments.
+ */
+export class SocialActivityCounts {
+    constructor(params: { 
+        entityUrn: string; 
+        numComments: number; 
+        numLikes: number; 
+        reactionTypeCounts: Array<{ count: number; reactionType: string; }>; 
+        liked: boolean; 
+        preDashEntityUrn?: string;
+    });
+
+    entityUrn: string;
+    numComments: number;
+    numLikes: number;
+    reactionTypeCounts: ReactionTypeCount[];
+    liked: boolean;
+    preDashEntityUrn?: string;
+}
+
+/**
+ * Class representing a group with a unique entity URN.
+ */
+export class Group {
+    constructor(params: { entityUrn: string; });
+
+    entityUrn: string;
+}
+
+/**
+ * A generic class that assigns passed data to its instance.
+ */
+export class GenericEntity {
+    constructor(data: any);
+
+    [key: string]: any;
+}
+
+
+export default class linkedInAPIClass {
+    constructor(resetCookies?: boolean);
+
+    /**
+     * A function to try and trick the LinkedIn API rate limit/bot detector
+     */
+    evade(): Promise<void>;
+
+    /**
+     * Searches for companies on LinkedIn.
+     * @param keyword Keyword for searching, e.g., "biotechnology"
+     * @param numEmp Array of numbers representing company sizes
+     * @param start Pagination start
+     * @param castToClass Whether to cast the result to Company classes or return raw JSON
+     * @param excludeGeneric Whether to exclude generic results
+     * @returns Promise resolving to either an array of Company or raw JSON
+     */
+    searchCompanies(keyword: string, numEmp?: number[], start?: number, castToClass?: boolean, excludeGeneric?: boolean): Promise<[SocialActivityCounts | Group | Company | GenericEntity]>;
+
+    /**
+     * Searches for LinkedIn employees.
+     * @param keyword The user to search for
+     * @param limit Maximum number of results
+     * @param castToClass Whether to cast the result to LinkedInProfile classes or return raw JSON
+     * @param currentCompanies Companies to filter by
+     * @param conDeg Connection degrees to include
+     * @returns Promise resolving to either an array of LinkedInProfile or raw JSON
+     */
+    searchEmployees(keyword: string, limit?: number, castToClass?: boolean, currentCompanies?: string[], conDeg?: Array<1 | 2 | 3>): Promise<any>;
+
+    /**
+     * Makes a request to the LinkedIn API.
+     * @param reqPath The API endpoint path
+     * @param isProfile Whether the request is for a profile
+     * @returns Promise resolving to the API response
+     */
+    private _makeReq(reqPath: string, isProfile?: boolean): Promise<any>;
+
+    /**
+     * Logs into LinkedIn using either cookies or authentication.
+     * @param username LinkedIn username
+     * @param password LinkedIn password
+     * @throws Throws an error if login fails
+     */
+    login(username: string, password: string): Promise<void>;
+
+    private headers: any;
+    private resetCookies: boolean;
+    private helper: any;
+}