diff --git a/index.js b/index.js
index f60c4c8b..f3eaf24a 100644
--- a/index.js
+++ b/index.js
@@ -1 +1,2 @@
 export { Timeline } from './src/js/index.js';
+export * from './src/types/timelinejs3.js';
\ No newline at end of file
diff --git a/src/types/knight-lab__timelinejs.d.ts b/src/types/knight-lab__timelinejs.d.ts
new file mode 100644
index 00000000..8b35d460
--- /dev/null
+++ b/src/types/knight-lab__timelinejs.d.ts
@@ -0,0 +1,11 @@
+import { Props } from './timelinejs3'
+
+declare module '@knight-lab/timelinejs' {
+  export class Timeline {
+    constructor(
+      containerId: string,
+      data: Props.Data,
+      options?: Props.Options
+    )
+  }
+}
diff --git a/src/types/timelinejs3.ts b/src/types/timelinejs3.ts
new file mode 100644
index 00000000..48ba54a1
--- /dev/null
+++ b/src/types/timelinejs3.ts
@@ -0,0 +1,440 @@
+export namespace Props {
+  export interface Date {
+    /**
+     * A number. Don't use commas. BCE years should be negative numbers.
+     * Don't use the letters "BC", "BCE" or any others.
+     */
+    year: number
+    /**
+     * A number from 1-12 (Javascript experts don't outsmart yourselves:
+     * Timeline corrects for Javascript's strange use of "0" for "January", etc.)
+     */
+    month?: number
+    day?: number
+    /**
+     * A number from 0-23
+     */
+    hour?: number
+    /**
+     * A number from 0-59
+     */
+    minute?: number
+    /**
+     * A number from 0-59
+     */
+    second?: number
+    millisecond?: number
+    /**
+     * A string for presenting the date. This value will be presented exactly as specified, overriding
+     * TimelineJS's default date formatting. Note that the year property, at a minimum, must still be
+     * provided so that TimelineJS can properly position the event on the actual timeline.
+     */
+    display_date?: string
+    /**
+     * A formatting string which will be used to render the date parts, if you wish to override
+     * TimelineJS's default formatting. Note that in general you can achieve the same with display_date
+     * (above), without needing to master the complexity of the date format strings.
+     */
+    format?: string
+  }
+  /**
+   * Text objects are JSON objects with the following properties. For each slide, text objects are optional.
+   */
+  export interface Text {
+    /**
+     * Any text. HTML markup is OK. Blank is also OK.
+     */
+    headline?: string
+    /**
+     * Any text. HTML markup is OK. Blank is OK. Not used for era objects.
+     */
+    text?: string
+  }
+  /**
+   * Media objects are JSON objects with the following properties. For each slide, media objects are optional.
+   */
+  export interface Media {
+    /**
+     * In most cases, a URL (see media type documentation for complete details).
+     * {@see https://timeline.knightlab.com/docs/media-types.html}
+     */
+    url: string
+    /**
+     * Any text. HTML markup is OK. Blank is also OK.
+     */
+    caption?: string
+    /**
+     * Any text. HTML markup is OK. Blank is also OK.
+     */
+    credit?: string
+    /**
+     * A URL for an image to use in the timenav marker for this event. If omitted, Timeline will use an icon based
+     * on the type of media. Not relevant for title slides, because they do not have a marker.
+     */
+    thumbnail?: string
+    /**
+     * An alt tag for your image. If none is provided, the caption, if any, will be used.
+     */
+    alt?: string
+    /**
+     * A title for your image. If none is provided, the caption, if any, will be used.
+     */
+    title?: string
+    /**
+     * Optional URL to use as the href for wrapping the media with an `<a>` tag.
+     */
+    link?: string
+    /**
+     * Optional target to be associated with `link` if used.
+     */
+    link_target?: '_blank' | '_self'
+  }
+  export interface Slide {
+    start_date: Date
+    end_date?: Date
+    /**
+     * Not required, but recommended. Any text. HTML markup is OK. Blank is also OK.
+     */
+    text?: Text
+    media?: Media
+    /**
+     * Any text. If present, Timeline will organize events with the same value for group to be in the same row
+     * or adjacent rows, separate from events in other groups. The common value for the group will be shown as
+     * a label at the left edge of the navigation.
+     */
+    group?: string
+    /**
+     * A string which will be used when Timeline displays the date for this. If used, override's display_date
+     * values set on the start or end date for this event, which is useful if you want to control how the two
+     * dates relate to each other.
+     */
+    display_date?: string
+    background?: {
+      /**
+       * The fully-qualified URL pointing to an image which will be used as the background for the event.
+       */
+      url?: string
+      /**
+       * Alternative text that describes the image provided by the url property
+       */
+      alt?: string
+      /**
+       * A CSS color, in hexadecimal (e.g. #0f9bd1) or a valid CSS color keyword.
+       * {@see https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#Color_keywords}
+       */
+      color?: string
+    }
+    /**
+     * A boolean value (true or false). Defaults to true, which means that Timeline will scan text fields
+     * and automatically add <a> tags so that links and email addresses are "clickable." If set to false,
+     * you may still manually apply the tags in the appropriate fields when you want links. Autolinking applies
+     * to the text field in a text object and the caption and credit fields in a media object.
+     */
+    autolink?: boolean
+    /**
+     * A string value which is unique among all slides in your timeline. If not specified, TimelineJS will construct
+     * an ID based on the headline, but if you later edit your headline, the ID will change. Unique IDs are used when
+     * the hash_bookmark option is used, and can also be used with the timeline.goToId() method to programmatically
+     * move the timeline to a specific slide.
+     */
+    unique_id?: string
+  }
+  /**
+   * Era objects are JSON objects which are used to label a span of time on the timeline navigation component.
+   * In structure, they are essentially very restricted "slide" objects.
+   */
+  export interface Era {
+    start_date: Date
+    end_date: Date
+    /**
+     * Not required, but recommended. Any text. HTML markup is OK. Blank is also OK.
+     */
+    text?: Omit<Text, 'text'>
+  }
+
+  export interface Data {
+    events: Slide[]
+    title?: Slide
+    eras?: Era[]
+    /**
+     * Either human or cosmological. If no scale is specified, the default is human. The cosmological scale is
+     * required to handle dates in the very distant past or future. (Before Tuesday, April 20th, 271,821 BCE
+     * after Saturday, September 13 275,760 CE) For the cosmological scale, only the year is considered, but it's
+     * OK to have a cosmological timeline with years between 271,821 BCE and 275,760 CE.
+     */
+    scale?: 'human' | 'cosmological' // default is "human"
+  }
+
+  /**
+   * When you create a timeline manually by calling TL.Timeline, you may pass in an optional third parameter which
+   * contains a variety of presentation options. This third parameter should be a Javascript object with keys matching
+   * the value in the Name column and corresponding values appropriate to the specific key.
+   * {@example
+   * ```js
+   * const options = {
+   *   hash_bookmark: false,
+   *   initial_zoom: 5,
+   * }
+   * const timeline = new TL.Timeline('timeline-embed',
+   *   'https://docs.google.com/spreadsheets/d/1cWqQBZCkX9GpzFtxCWHoqFXCHg-ylTVUWlnrdYMzKUI/pubhtml',
+   *   options)
+   * ```
+   * }
+   *
+   * If you use our authoring tool, you can pass most of these as URL parameters. Add &option_name=value for each.
+   * To demonstrate using the same options as above:
+   * https://cdn.knightlab.com/libs/timeline3/latest/embed/index.html?source=1cWqQBZCkX9GpzFtxCWHoqFXCHg-ylTVUWlnrdYMzKUI&font=Default&lang=en&initial_zoom=3&height=650&hash_bookmark=false
+   */
+  export interface Options {
+    /**
+     * default is `"default"`
+     *
+     * May be one of a list of Timeline's "built-in" font sets, or a full or relative URL (ending in .css) which
+     * points to a CSS file in the same format as the built-ins. (See the typography section of "Overriding
+     * Timeline's Styles")
+     * {@see https://timeline.knightlab.com/docs/overriding-styles.html#typography}
+     * The valid values for the built-in fonts are:
+     * `
+     * abril-droidsans
+     * amatic-andika
+     * bevan-pontanosans
+     * bitter-raleway
+     * clicker-garamond
+     * dancing-ledger
+     * default
+     * fjalla-average
+     * georgia-helvetica
+     * lustria-lato
+     * medula-lato
+     * oldstandard
+     * opensans-gentiumbook
+     * playfair-faunaone
+     * playfair
+     * pt
+     * roboto-megrim
+     * rufina-sintony
+     * ubuntu
+     * unicaone-vollkorn
+     * `
+     */
+    font?: 'default' | string
+    /**
+     * default is `false`
+     *
+     * If true, copious console logging will be enabled.
+     */
+    debug?: boolean
+    /**
+     * `this._el.container.offsetHeight`
+     *
+     * The height of the timeline.
+     */
+    height?: number
+    /**
+     * `this._el.container.offsetWidth`
+     *
+     * The width of the timeline.
+     */
+    width?: number
+    /**
+     * default is `false`
+     *
+     * If `true`, the class `tl-timeline-embed` is added to the outer Timeline container. Typically only used to
+     * support Timeline iframe embeds.
+     */
+    is_embed?: boolean
+    /**
+     * default is `false`
+     *
+     * If set to `true`, TimelineJS will update the browser URL each time a slide advances, so that people can
+     * link directly to specific slides.
+     */
+    hash_bookmark?: boolean
+    /**
+     * default is `"white"`
+     *
+     * RGB values to use for slide backgrounds. Specify as hex code, CSS named color, or a Javascript object
+     * with `r`, `g`, and `b` properties from 0-255.
+     */
+    default_bg_color?: string
+    /**
+     * default is `2`
+     *
+     * How many screen widths wide the timeline should be at first presentation.
+     */
+    scale_factor?: number
+    /**
+     * The position in the `zoom_sequence` series used to scale the Timeline when it is first created. Takes
+     * precedence over `scale_factor`.
+     */
+    initial_zoom?: number
+    /**
+     * default is `[0.5, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89]`
+     *
+     * Array of values for TimeNav zoom levels. Each value is a `scale_factor`, which means that at any given
+     * level, the full timeline would require that many screens to display all events.
+     */
+    zoom_sequence?: number[]
+    /**
+     * default is `"bottom"`
+     *
+     * Display the timeline nav on the `top` or `bottom`.
+     */
+    timenav_position?: 'top' | 'bottom'
+    /**
+     * default is `100`
+     *
+     * Optimal distance (in pixels) between ticks on axis.
+     */
+    optimal_tick_width?: number
+    /**
+     * default is `"tl-timeline"`
+     *
+     * Removing the `tl-timeline` base class will disable all default stylesheets.
+     */
+    base_class?: string
+    /**
+     * default is `150`
+     *
+     * The height in pixels of the timeline nav. Takes precedence over timenav_height_percentage.
+     */
+    timenav_height?: number
+    /**
+     * default is `25`
+     *
+     * Specify the timeline nav height as a percentage of the screen instead of in pixels.
+     */
+    timenav_height_percentage?: number
+    /**
+     * default is `40`
+     *
+     * Specify the timeline nav height as a percentage of a mobile device screen.
+     */
+    timenav_mobile_height_percentage?: number
+    /**
+     * default is `150`
+     *
+     * The minimum timeline nav height (in pixels).
+     */
+    timenav_height_min?: number
+    /**
+     * default is `30`
+     *
+     * The minimum marker height (in pixels).
+     */
+    marker_height_min?: number
+    /**
+     * default is `100`
+     *
+     * The minimum marker witdh (in pixels).
+     */
+    marker_width_min?: number
+    /**
+     * default is `5`
+     *
+     * Top and bottom padding (in pixels) for markers.
+     */
+    marker_padding?: number
+    /**
+     * default is `0`
+     *
+     * The first slide to display when the timeline is loaded.
+     */
+    start_at_slide?: number
+    /**
+     * default is `false`
+     * If true, loads timeline on last slide.
+     */
+    start_at_end?: boolean
+    /**
+     * default is `0`
+     */
+    menubar_height?: number
+    /**
+     * default is `false`
+     *
+     * Use declared suffix on dates earlier than 0.
+     */
+    use_bc?: boolean
+    /**
+     * default is `1000`
+     *
+     * Animation duration (in milliseconds).
+     */
+    duration?: number
+    /**
+     * default is `TL.Ease.easeInOutQuint`
+     */
+    ease?: string
+    /**
+     * default is `true`
+     */
+    dragging?: boolean
+    /**
+     * default is `true`
+     */
+    trackResize?: boolean
+    /**
+     * default is `100`
+     *
+     * Padding (in pixels) on the left and right of each slide.
+     */
+    slide_padding_lr?: number
+    /**
+     * default is `"0%"`
+     */
+    slide_default_fade?: string
+    /**
+     * default is `"en"`
+     *
+     * Value should be a language code for a translation set included with TimelineJS. See the
+     * Github repository for the set of supported language codes—to use these, specify the
+     * filename without the `.json` extension.
+     * {@see https://github.com/NUKnightLab/TimelineJS3/tree/master/src/js/language/locale}
+     *
+     * Alternatively, you can create your own translation file, for other languages or simply
+     * to override the default messages. To do this, specify a URL to a file based on `en.json`.
+     * Your URL must end in `.json`.
+     */
+    language?: string
+    /**
+     * default is `null`
+     *
+     * Google Analytics ID.
+     */
+    ga_property_id?: string
+    /**
+     * default is `['back_to_start', 'nav_next', 'nav_previous', 'zoom_in', 'zoom_out']`
+     */
+    track_events?: string[]
+    /**
+     * default is `""`
+     *
+     * Can be used to help Timeline load related resources such as CSS themes and language files.
+     * Rarely needs to be set, except if you are bundling the TimelineJS javascript code with other
+     * javascript, so that the script it load from isn't in the same "relative" location to your
+     * local copy of those resources.
+     */
+    script_path?: string
+    /**
+     * default is `false`
+     *
+     * If this option is set to true, then TimelineJS will load the code necessary to support clips
+     * created using Knight Lab's SoundciteJS. This eliminates the need to add the embed code shown
+     * in step 3 of the Soundcite authoring tool. Simply copy the per-clip markup from step 2 into
+     * the "text" field for any TimelineJS event.
+     *
+     * Note that while the default value for this option is false, for timelines hosted on Knight
+     * Lab's systems, the value is set to true for ease of use.
+     */
+    soundcite?: boolean
+  }
+}
+
+export type Data = Props.Data
+export type Options = Props.Options
+export type Text = Props.Text
+export type Media = Props.Media
+export type Era = Props.Era
+export type Slide = Props.Slide
+export type Date = Props.Date