diff --git a/static/js/compose.js b/static/js/compose.js
index 42ab16c587..0c6ba3ed46 100644
--- a/static/js/compose.js
+++ b/static/js/compose.js
@@ -12,8 +12,8 @@ import * as compose_fade from "./compose_fade";
 import * as compose_state from "./compose_state";
 import * as compose_ui from "./compose_ui";
 import * as compose_validate from "./compose_validate";
-import * as composebox_typeahead from "./composebox_typeahead";
 import * as echo from "./echo";
+import * as flatpickr from "./flatpickr";
 import * as giphy from "./giphy";
 import {$t, $t_html} from "./i18n";
 import * as loading from "./loading";
@@ -637,7 +637,7 @@ export function initialize() {
                 compose_ui.insert_syntax_and_focus(timestr, target_textarea);
             };
 
-            composebox_typeahead.show_flatpickr(
+            flatpickr.show_flatpickr(
                 $(compose_click_target)[0],
                 on_timestamp_selection,
                 new Date(),
diff --git a/static/js/composebox_typeahead.js b/static/js/composebox_typeahead.js
index 3acb1e0197..a6993c3f0a 100644
--- a/static/js/composebox_typeahead.js
+++ b/static/js/composebox_typeahead.js
@@ -1,5 +1,3 @@
-import {formatISO} from "date-fns";
-import ConfirmDatePlugin from "flatpickr/dist/plugins/confirmDate/confirmDate";
 import $ from "jquery";
 import _ from "lodash";
 
@@ -12,7 +10,7 @@ import * as compose_pm_pill from "./compose_pm_pill";
 import * as compose_state from "./compose_state";
 import * as compose_ui from "./compose_ui";
 import * as compose_validate from "./compose_validate";
-import {get_keydown_hotkey} from "./hotkey";
+import * as flatpickr from "./flatpickr";
 import {$t} from "./i18n";
 import * as message_store from "./message_store";
 import * as muted_users from "./muted_users";
@@ -768,118 +766,6 @@ export function content_highlighter(item) {
     }
 }
 
-function is_numeric_key(key) {
-    return ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"].includes(key);
-}
-
-export function show_flatpickr(element, callback, default_timestamp, options = {}) {
-    const flatpickr_input = $("<input id='#timestamp_flatpickr'>");
-
-    const instance = flatpickr_input.flatpickr({
-        mode: "single",
-        enableTime: true,
-        clickOpens: false,
-        defaultDate: default_timestamp,
-        plugins: [
-            new ConfirmDatePlugin({
-                showAlways: true,
-                confirmText: $t({defaultMessage: "Confirm"}),
-                confirmIcon: "",
-            }),
-        ],
-        positionElement: element,
-        dateFormat: "Z",
-        formatDate: (date) => formatISO(date),
-        disableMobile: true,
-        onKeyDown: (selectedDates, dateStr, instance, event) => {
-            if (is_numeric_key(event.key)) {
-                // Don't attempt to get_keydown_hotkey for numeric inputs
-                // as it would return undefined.
-                return;
-            }
-
-            const hotkey = get_keydown_hotkey(event);
-
-            if (["tab", "shift_tab"].includes(hotkey.name)) {
-                const elems = [
-                    instance.selectedDateElem,
-                    instance.hourElement,
-                    instance.minuteElement,
-                    instance.amPM,
-                    $(".flatpickr-confirm")[0],
-                ];
-                const i = elems.indexOf(event.target);
-                const n = elems.length;
-                const remain = (i + (event.shiftKey ? -1 : 1)) % n;
-                const target = elems[Math.floor(remain >= 0 ? remain : remain + n)];
-                event.preventDefault();
-                event.stopPropagation();
-                target.focus();
-            }
-
-            event.stopPropagation();
-        },
-        ...options,
-    });
-
-    const container = $($(instance.innerContainer).parent());
-
-    container.on("keydown", (e) => {
-        if (is_numeric_key(e.key)) {
-            // Let users type numeric values
-            return true;
-        }
-
-        const hotkey = get_keydown_hotkey(e);
-
-        if (!hotkey) {
-            return false;
-        }
-
-        if (hotkey.name === "backspace" || hotkey.name === "delete") {
-            // Let backspace or delete be handled normally
-            return true;
-        }
-
-        if (hotkey.name === "enter") {
-            if (e.target.classList[0] === "flatpickr-day") {
-                return true; // use flatpickr default implementation
-            }
-            $(element).toggleClass("has_popover");
-            container.find(".flatpickr-confirm").trigger("click");
-        }
-
-        if (hotkey.name === "escape") {
-            $(element).toggleClass("has_popover");
-            instance.close();
-            instance.destroy();
-        }
-
-        if (["tab", "shift_tab"].includes(hotkey.name)) {
-            return true; // use flatpickr default implementation
-        }
-
-        if (["right_arrow", "up_arrow", "left_arrow", "down_arrow"].includes(hotkey.name)) {
-            return true; // use flatpickr default implementation
-        }
-
-        e.stopPropagation();
-        e.preventDefault();
-
-        return true;
-    });
-
-    container.on("click", ".flatpickr-confirm", () => {
-        callback(flatpickr_input.val());
-        instance.close();
-        instance.destroy();
-    });
-    instance.open();
-    instance.selectedDateElem.focus();
-
-    return instance;
-}
-
 export function content_typeahead_selected(item, event) {
     const pieces = split_at_cursor(this.query, this.$element);
     let beginning = pieces[0];
@@ -1016,7 +902,7 @@ export function content_typeahead_selected(item, event) {
                 textbox.caret(beginning.length, beginning.length);
                 compose_ui.autosize_textarea(textbox);
             };
-            show_flatpickr(this.$element[0], on_timestamp_selection, timestamp);
+            flatpickr.show_flatpickr(this.$element[0], on_timestamp_selection, timestamp);
             return beginning + rest;
         }
     }
diff --git a/static/js/flatpickr.js b/static/js/flatpickr.js
new file mode 100644
index 0000000000..8b7b95e89e
--- /dev/null
+++ b/static/js/flatpickr.js
@@ -0,0 +1,118 @@
+import {formatISO} from "date-fns";
+import ConfirmDatePlugin from "flatpickr/dist/plugins/confirmDate/confirmDate";
+import $ from "jquery";
+
+import {get_keydown_hotkey} from "./hotkey";
+import {$t} from "./i18n";
+
+function is_numeric_key(key) {
+    return ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"].includes(key);
+}
+
+export function show_flatpickr(element, callback, default_timestamp, options = {}) {
+    const flatpickr_input = $("<input id='#timestamp_flatpickr'>");
+
+    const instance = flatpickr_input.flatpickr({
+        mode: "single",
+        enableTime: true,
+        clickOpens: false,
+        defaultDate: default_timestamp,
+        plugins: [
+            new ConfirmDatePlugin({
+                showAlways: true,
+                confirmText: $t({defaultMessage: "Confirm"}),
+                confirmIcon: "",
+            }),
+        ],
+        positionElement: element,
+        dateFormat: "Z",
+        formatDate: (date) => formatISO(date),
+        disableMobile: true,
+        onKeyDown: (selectedDates, dateStr, instance, event) => {
+            if (is_numeric_key(event.key)) {
+                // Don't attempt to get_keydown_hotkey for numeric inputs
+                // as it would return undefined.
+                return;
+            }
+
+            const hotkey = get_keydown_hotkey(event);
+
+            if (["tab", "shift_tab"].includes(hotkey.name)) {
+                const elems = [
+                    instance.selectedDateElem,
+                    instance.hourElement,
+                    instance.minuteElement,
+                    instance.amPM,
+                    $(".flatpickr-confirm")[0],
+                ];
+                const i = elems.indexOf(event.target);
+                const n = elems.length;
+                const remain = (i + (event.shiftKey ? -1 : 1)) % n;
+                const target = elems[Math.floor(remain >= 0 ? remain : remain + n)];
+                event.preventDefault();
+                event.stopPropagation();
+                target.focus();
+            }
+
+            event.stopPropagation();
+        },
+        ...options,
+    });
+
+    const container = $($(instance.innerContainer).parent());
+
+    container.on("keydown", (e) => {
+        if (is_numeric_key(e.key)) {
+            // Let users type numeric values
+            return true;
+        }
+
+        const hotkey = get_keydown_hotkey(e);
+
+        if (!hotkey) {
+            return false;
+        }
+
+        if (hotkey.name === "backspace" || hotkey.name === "delete") {
+            // Let backspace or delete be handled normally
+            return true;
+        }
+
+        if (hotkey.name === "enter") {
+            if (e.target.classList[0] === "flatpickr-day") {
+                return true; // use flatpickr default implementation
+            }
+            $(element).toggleClass("has_popover");
+            container.find(".flatpickr-confirm").trigger("click");
+        }
+
+        if (hotkey.name === "escape") {
+            $(element).toggleClass("has_popover");
+            instance.close();
+            instance.destroy();
+        }
+
+        if (["tab", "shift_tab"].includes(hotkey.name)) {
+            return true; // use flatpickr default implementation
+        }
+
+        if (["right_arrow", "up_arrow", "left_arrow", "down_arrow"].includes(hotkey.name)) {
+            return true; // use flatpickr default implementation
+        }
+
+        e.stopPropagation();
+        e.preventDefault();
+
+        return true;
+    });
+
+    container.on("click", ".flatpickr-confirm", () => {
+        callback(flatpickr_input.val());
+        instance.close();
+        instance.destroy();
+    });
+    instance.open();
+    instance.selectedDateElem.focus();
+
+    return instance;
+}
\ No newline at end of file
diff --git a/tools/test-js-with-node b/tools/test-js-with-node
index c777d2d3e9..b2260bd1e2 100755
--- a/tools/test-js-with-node
+++ b/tools/test-js-with-node
@@ -81,6 +81,7 @@ EXEMPT_FILES = make_set(
         "static/js/emojisets.js",
         "static/js/favicon.js",
         "static/js/feedback_widget.js",
+        "static/js/flatpickr.js",
         "static/js/floating_recipient_bar.js",
         "static/js/gear_menu.js",
         "static/js/giphy.js",