chore: type general utils (#2381)

* type camera

* type reducer store

* type actionhelpers

* type catchErrorsWrap callsite

* missed camera member var

* type nameCreators

* type makeContinousDimensionName callsite

* type promise limit

* type quantile

* type range

* introduce TypedArray + NumericArray

* type range

* cleanup test

* fix call sites

* type plimit call site

* finish typing camera

* use our TypedArray

* type scientific and sigFig utils and callsites

* simple typings

* type catLabelSort

* type callsite

* type

* callsites

* type camera methods

* swap back to strings, set defaults accordingly

* partially type centroid

* explicit tuple and undefined check

* fix references to this

* call constructor with new and casting

* Revert "introduce TypedArray + NumericArray"

This reverts commit cf21538717.

* explicit tuple

* generics and import fixes

* add unsigned 8 clamped arrray

* back to literals

* use arraytypes

* fix return state

* type more actions

* Update client/src/util/actionHelpers.ts

Co-authored-by: Timmy Huang <tihuan@users.noreply.github.com>

* properly type dispatch

* properly type thunk

* use new dispatch

* remove nullish coallescer

* use AppDispatch

* generic jsonrequest

* use dispatch again

* lint

Co-authored-by: Timmy Huang <tihuan@users.noreply.github.com>

client/__tests__/e2e/cellxgeneActions.ts

@@ -94,10 +94,12 @@ export async function getAllCategoriesAndCounts(category: any) {
             .querySelector("[data-testclass='categorical-value']")
             .getAttribute("aria-label");
 
-          const count = (row.querySelector(
-            "[data-testclass='categorical-value-count']"
-            // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-          ) as any).innerText;
+          const count = (
+            row.querySelector(
+              "[data-testclass='categorical-value-count']"
+              // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
+            ) as any
+          ).innerText;
 
           return [cat, count];
         })
@@ -194,8 +196,7 @@ export async function expandCategory(category: any) {
   if (notExpanded) await clickOn(`${category}:category-expand`);
 }
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-export async function clip(min = 0, max = 100) {
+export async function clip(min = "0", max = "100"): Promise<void> {
   await clickOn("visualization-settings");
   await clearInputAndTypeInto("clip-min-input", min);
   await clearInputAndTypeInto("clip-max-input", max);

client/__tests__/e2e/e2e.test.ts

@@ -199,7 +199,6 @@ describe("clipping", () => {
   test("clip continuous", async () => {
     await goToPage(appUrlBase);
 
-    // @ts-expect-error ts-migrate(2345) FIXME: Argument of type 'string' is not assignable to par... Remove this comment to see the full error message
     await clip(data.clip.min, data.clip.max);
     const histBrushableAreaId = `histogram-${data.clip.metadata}-plot-brushable-area`;
     const coords = await calcDragCoordinates(

client/__tests__/util/promiseLimit.test.ts

@@ -52,9 +52,7 @@ describe("PromiseLimit", () => {
       running -= 1;
     };
 
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 1.
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    await Promise.all(range(10).map((i: any) => plimit.add(() => callback(i))));
+    await Promise.all(range(10).map(() => plimit.add(() => callback())));
 
     expect(maxRunning).toEqual(2);
   });

client/__tests__/util/range.test.ts

@@ -6,20 +6,14 @@ describe("range", () => {
   });
 
   test("range(stop)", () => {
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 1.
     expect(range(3)).toMatchObject([0, 1, 2]);
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 1.
     expect(range(0)).toMatchObject([]);
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 1.
     expect(range(1)).toMatchObject([0]);
   });
 
   test("range(start,stop)", () => {
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 2.
     expect(range(0, 0)).toMatchObject([]);
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 2.
     expect(range(0, 2)).toMatchObject([0, 1]);
-    // @ts-expect-error ts-migrate(2554) FIXME: Expected 3 arguments, but got 2.
     expect(range(4, 8)).toMatchObject([4, 5, 6, 7]);
   });
 

client/src/actions/embedding.ts

@@ -2,7 +2,10 @@
 action creators related to embeddings choice
 */
 
+import { Action, ActionCreator } from "redux";
+import { ThunkAction } from "redux-thunk";
 import { AnnoMatrixObsCrossfilter } from "../annoMatrix";
+import type { AppDispatch, RootState } from "../reducers";
 import { _setEmbeddingSubset } from "../util/stateManager/viewStackHelpers";
 
 // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
@@ -29,30 +32,26 @@ export async function _switchEmbedding(
   return [annoMatrix, obsCrossfilter];
 }
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const layoutChoiceAction = (newLayoutChoice: any) => async (
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  dispatch: any,
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  getState: any
-) => {
-  /*
+export const layoutChoiceAction: ActionCreator<
+  ThunkAction<Promise<void>, RootState, never, Action<"set layout choice">>
+> =
+  (newLayoutChoice: string) =>
+  async (dispatch: AppDispatch, getState: () => RootState): Promise<void> => {
+    /*
   On layout choice, make sure we have selected all on the previous layout, AND the new
   layout.
   */
-  const {
-    annoMatrix: prevAnnoMatrix,
-    obsCrossfilter: prevCrossfilter,
-  } = getState();
-  const [annoMatrix, obsCrossfilter] = await _switchEmbedding(
-    prevAnnoMatrix,
-    prevCrossfilter,
-    newLayoutChoice
-  );
-  dispatch({
-    type: "set layout choice",
-    layoutChoice: newLayoutChoice,
-    obsCrossfilter,
-    annoMatrix,
-  });
-};
+    const { annoMatrix: prevAnnoMatrix, obsCrossfilter: prevCrossfilter } =
+      getState();
+    const [annoMatrix, obsCrossfilter] = await _switchEmbedding(
+      prevAnnoMatrix,
+      prevCrossfilter,
+      newLayoutChoice
+    );
+    dispatch({
+      type: "set layout choice",
+      layoutChoice: newLayoutChoice,
+      obsCrossfilter,
+      annoMatrix,
+    });
+  };

client/src/actions/index.ts

@@ -1,3 +1,4 @@
+import type { Config } from "../globals";
 import * as globals from "../globals";
 import { AnnoMatrixLoader, AnnoMatrixObsCrossfilter } from "../annoMatrix";
 import {
@@ -11,6 +12,9 @@ import * as annoActions from "./annotation";
 import * as viewActions from "./viewStack";
 import * as embActions from "./embedding";
 import * as genesetActions from "./geneset";
+import { AppDispatch, RootState } from "../reducers";
+import { EmbeddingSchema, Schema } from "../common/types/schema";
+import { UserInfoPayload } from "../reducers/userInfo";
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
 function setGlobalConfig(config: any) {
@@ -36,35 +40,34 @@ async function userColorsFetchAndLoad(dispatch: any) {
   );
 }
 
-async function schemaFetch() {
-  return fetchJson("schema");
+async function schemaFetch(): Promise<{ schema: Schema }> {
+  return fetchJson<{ schema: Schema }>("schema");
 }
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-async function configFetch(dispatch: any) {
-  return fetchJson("config").then((response) => {
-    const config = { ...globals.configDefaults, ...response.config };
+async function configFetch(dispatch: AppDispatch): Promise<Config> {
+  const response = await fetchJson<{ config: globals.Config }>("config");
+  const config = { ...globals.configDefaults, ...response.config };
 
-    setGlobalConfig(config);
+  setGlobalConfig(config);
 
-    dispatch({
-      type: "configuration load complete",
-      config,
-    });
-    return config;
+  dispatch({
+    type: "configuration load complete",
+    config,
   });
+  return config;
 }
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-async function userInfoFetch(dispatch: any) {
-  return fetchJson("userinfo").then((response) => {
-    const { userinfo: userInfo } = response || {};
-    dispatch({
-      type: "userInfo load complete",
-      userInfo,
-    });
-    return userInfo;
-  });
+async function userInfoFetch(dispatch: AppDispatch): Promise<UserInfoPayload> {
+  return fetchJson<{ userinfo: UserInfoPayload }>("userinfo").then(
+    (response) => {
+      const { userinfo: userInfo } = response || {};
+      dispatch({
+        type: "userInfo load complete",
+        userInfo,
+      });
+      return userInfo;
+    }
+  );
 }
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
@@ -104,17 +107,17 @@ function prefetchEmbeddings(annoMatrix: any) {
 /*
 Application bootstrap
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-const doInitialDataLoad = () =>
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  catchErrorsWrap(async (dispatch: any) => {
+const doInitialDataLoad = (): ((
+  dispatch: AppDispatch,
+  getState: () => RootState
+) => void) =>
+  catchErrorsWrap(async (dispatch: AppDispatch) => {
     dispatch({ type: "initial data load start" });
 
     try {
       const [config, schema] = await Promise.all([
         configFetch(dispatch),
-        // @ts-expect-error ts-migrate(2554) FIXME: Expected 0 arguments, but got 1.
-        schemaFetch(dispatch),
+        schemaFetch(),
         userColorsFetchAndLoad(dispatch),
         userInfoFetch(dispatch),
       ]);
@@ -137,8 +140,7 @@ const doInitialDataLoad = () =>
       const layoutSchema = schema?.schema?.layout?.obs ?? [];
       if (
         defaultEmbedding &&
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-        layoutSchema.some((s: any) => s.name === defaultEmbedding)
+        layoutSchema.some((s: EmbeddingSchema) => s.name === defaultEmbedding)
       ) {
         dispatch(embActions.layoutChoiceAction(defaultEmbedding));
       }
@@ -188,87 +190,89 @@ const dispatchDiffExpErrors = (dispatch: any, response: any) => {
   }
 };
 
-const requestDifferentialExpression = (
+const requestDifferentialExpression =
+  (
+    // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
+    set1: any,
+    // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
+    set2: any,
+    num_genes = 50
+    // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
+  ) =>
   // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  set1: any,
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  set2: any,
-  num_genes = 50
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-) => async (dispatch: any, getState: any) => {
-  dispatch({ type: "request differential expression started" });
-  try {
-    /*
+  async (dispatch: any, getState: any) => {
+    dispatch({ type: "request differential expression started" });
+    try {
+      /*
     Steps:
     1. get the most differentially expressed genes
     2. get expression data for each
     */
-    const { annoMatrix } = getState();
-    const varIndexName = annoMatrix.schema.annotations.var.index;
+      const { annoMatrix } = getState();
+      const varIndexName = annoMatrix.schema.annotations.var.index;
 
-    // Legal values are null, Array or TypedArray.  Null is initial state.
-    if (!set1) set1 = [];
-    if (!set2) set2 = [];
+      // Legal values are null, Array or TypedArray.  Null is initial state.
+      if (!set1) set1 = [];
+      if (!set2) set2 = [];
 
-    // These lines ensure that we convert any TypedArray to an Array.
-    // This is necessary because JSON.stringify() does some very strange
-    // things with TypedArrays (they are marshalled to JSON objects, rather
-    // than being marshalled as a JSON array).
-    set1 = Array.isArray(set1) ? set1 : Array.from(set1);
-    set2 = Array.isArray(set2) ? set2 : Array.from(set2);
+      // These lines ensure that we convert any TypedArray to an Array.
+      // This is necessary because JSON.stringify() does some very strange
+      // things with TypedArrays (they are marshalled to JSON objects, rather
+      // than being marshalled as a JSON array).
+      set1 = Array.isArray(set1) ? set1 : Array.from(set1);
+      set2 = Array.isArray(set2) ? set2 : Array.from(set2);
 
-    const res = await fetch(
-      `${globals.API.prefix}${globals.API.version}diffexp/obs`,
-      {
-        method: "POST",
-        headers: new Headers({
-          Accept: "application/json",
-          "Content-Type": "application/json",
-        }),
-        body: JSON.stringify({
-          mode: "topN",
-          count: num_genes,
-          set1: { filter: { obs: { index: set1 } } },
-          set2: { filter: { obs: { index: set2 } } },
-        }),
-        credentials: "include",
+      const res = await fetch(
+        `${globals.API.prefix}${globals.API.version}diffexp/obs`,
+        {
+          method: "POST",
+          headers: new Headers({
+            Accept: "application/json",
+            "Content-Type": "application/json",
+          }),
+          body: JSON.stringify({
+            mode: "topN",
+            count: num_genes,
+            set1: { filter: { obs: { index: set1 } } },
+            set2: { filter: { obs: { index: set2 } } },
+          }),
+          credentials: "include",
+        }
+      );
+
+      if (!res.ok || res.headers.get("Content-Type") !== "application/json") {
+        return dispatchDiffExpErrors(dispatch, res);
       }
-    );
 
-    if (!res.ok || res.headers.get("Content-Type") !== "application/json") {
-      return dispatchDiffExpErrors(dispatch, res);
+      const response = await res.json();
+      const varIndex = await annoMatrix.fetch("var", varIndexName);
+      const diffexpLists = { negative: [], positive: [] };
+      for (const polarity of Object.keys(diffexpLists)) {
+        // @ts-expect-error ts-migrate(7053) FIXME: Element implicitly has an 'any' type because expre... Remove this comment to see the full error message
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
+        diffexpLists[polarity] = response[polarity].map((v: any) => [
+          varIndex.at(v[0], varIndexName),
+          ...v.slice(1),
+        ]);
+      }
+
+      /* then send the success case action through */
+      return dispatch({
+        type: "request differential expression success",
+        data: diffexpLists,
+      });
+    } catch (error) {
+      return dispatch({
+        type: "request differential expression error",
+        error,
+      });
     }
+  };
 
-    const response = await res.json();
-    const varIndex = await annoMatrix.fetch("var", varIndexName);
-    const diffexpLists = { negative: [], positive: [] };
-    for (const polarity of Object.keys(diffexpLists)) {
-      // @ts-expect-error ts-migrate(7053) FIXME: Element implicitly has an 'any' type because expre... Remove this comment to see the full error message
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-      diffexpLists[polarity] = response[polarity].map((v: any) => [
-        varIndex.at(v[0], varIndexName),
-        ...v.slice(1),
-      ]);
-    }
-
-    /* then send the success case action through */
-    return dispatch({
-      type: "request differential expression success",
-      data: diffexpLists,
-    });
-  } catch (error) {
-    return dispatch({
-      type: "request differential expression error",
-      error,
-    });
-  }
-};
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-function fetchJson(pathAndQuery: any) {
-  return doJsonRequest(
+function fetchJson<T>(pathAndQuery: string): Promise<T> {
+  return doJsonRequest<T>(
     `${globals.API.prefix}${globals.API.version}${pathAndQuery}`
-  );
+  ) as Promise<T>;
 }
 
 export default {

client/src/annoMatrix/normalize.ts

@@ -80,10 +80,10 @@ export function normalizeWritableCategoricalSchema(
 ) {
   /*
   Ensure all enum writable / categorical schema have a categories array, that
-  the categories array contains all unique values in the data array, AND that 
+  the categories array contains all unique values in the data array, AND that
   the array is UI sorted.
   */
-  const categorySet = new Set(
+  const categorySet = new Set<string>(
     col.summarizeCategorical().categories.concat(colSchema.categories ?? [])
   );
   if (!categorySet.has(unassignedCategoryLabel)) {
@@ -118,7 +118,7 @@ export function normalizeCategorical(
 
   // consolidate all categories from data and schema into a single list
   const colDataSummary = col.summarizeCategorical();
-  const allCategories = new Set(
+  const allCategories = new Set<string>(
     colDataSummary.categories.concat(colSchema.categories ?? [])
   );
 

client/src/common/types/arraytypes.ts

@@ -8,6 +8,7 @@
 export type TypedArray =
   | Int8Array
   | Uint8Array
+  | Uint8ClampedArray
   | Int16Array
   | Uint16Array
   | Int32Array

client/src/components/brushableHistogram/histogram.tsx

@@ -2,6 +2,7 @@ import React, { useEffect, useRef, useState } from "react";
 import { interpolateCool } from "d3-scale-chromatic";
 import * as d3 from "d3";
 
+import { AxisDomain } from "d3";
 import maybeScientific from "../../util/maybeScientific";
 import clamp from "../../util/clamp";
 
@@ -120,8 +121,12 @@ const Histogram = ({
           d3
             .axisBottom(x)
             .ticks(4)
-            // @ts-expect-error ts-migrate(2769) FIXME: No overload matches this call.
-            .tickFormat(d3.format(maybeScientific(x)))
+            .tickFormat(
+              d3.format(maybeScientific(x)) as (
+                dv: AxisDomain,
+                i: number
+              ) => string
+            )
         );
 
       /* Y AXIS */

client/src/components/framework/toasters.ts

@@ -26,8 +26,10 @@ export const keepAroundErrorToast = (message: any) =>
 /*
 a hard network error
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const postNetworkErrorToast = (message: any, key = undefined) =>
+export const postNetworkErrorToast = (
+  message: string,
+  key: string | undefined = undefined
+): string =>
   ToastTopCenter.show(
     {
       message,

client/src/globals.ts

@@ -8,11 +8,24 @@ export const overflowCategoryLabel = ": all other labels";
 /* default "unassigned" value for user-created categorical metadata */
 export const unassignedCategoryLabel = "unassigned";
 
+/* rough shape of config object */
+export interface Config {
+  features: Record<string, unknown>;
+  displayNames: Record<string, unknown>;
+  parameters: {
+    "disable-diffexp"?: boolean;
+    "diffexp-may-be-slow"?: boolean;
+    default_embedding?: string;
+    [key: string]: unknown;
+  };
+  links: Record<string, unknown>;
+}
+
 /*
 these are default values for configuration the CLI may supply.
 See the REST API and CLI specs for more info.
 */
-export const configDefaults = {
+export const configDefaults: Config = {
   features: {},
   displayNames: {},
   parameters: {

client/src/reducers/continuousSelection.ts

@@ -1,7 +1,23 @@
+import type { Action } from "redux";
+
 import { makeContinuousDimensionName } from "../util/nameCreators";
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-const ContinuousSelection = (state = {}, action: any) => {
+import type { ContinuousNamespace } from "../util/nameCreators";
+
+export interface ContinuousSelectionAction extends Action<string> {
+  continuousNamespace: ContinuousNamespace;
+  selection: string;
+  range: [number, number];
+}
+
+export interface ContinuousSelectionState {
+  [name: string]: [number, number];
+}
+
+const ContinuousSelection = (
+  state: ContinuousSelectionState = {},
+  action: ContinuousSelectionAction
+): ContinuousSelectionState => {
   switch (action.type) {
     case "reset subset":
     case "subset to selection":
@@ -25,7 +41,6 @@ const ContinuousSelection = (state = {}, action: any) => {
         action.continuousNamespace,
         action.selection
       );
-      // @ts-expect-error ts-migrate(2537) FIXME: Type '{}' has no matching index signature for type... Remove this comment to see the full error message
       const { [name]: deletedField, ...newState } = state;
       return newState;
     }

client/src/reducers/index.ts

@@ -1,5 +1,5 @@
-import { createStore, applyMiddleware } from "redux";
-import thunk from "redux-thunk";
+import { createStore, applyMiddleware, AnyAction } from "redux";
+import thunk, { ThunkDispatch } from "redux-thunk";
 
 import cascadeReducers from "./cascade";
 import undoable from "./undoable";
@@ -63,4 +63,8 @@ const Reducer = undoable(
 
 const store = createStore(Reducer, applyMiddleware(thunk, annoMatrixGC));
 
+export type RootState = ReturnType<typeof store.getState>;
+
+export type AppDispatch = ThunkDispatch<RootState, never, AnyAction>;
+
 export default store;

client/src/reducers/userInfo.ts

@@ -1,5 +1,27 @@
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-const UserInfo = (state = {}, action: any) => {
+import { Action } from "redux";
+
+export interface UserInfoAction extends Action<string>, User {
+  userInfo: UserInfoPayload;
+  error: string;
+}
+
+export interface UserInfoPayload {
+  is_authenticated: boolean;
+  username: string;
+  user_id: string;
+  email: string;
+  picture: string;
+}
+
+export interface UserInfoState extends UserInfoPayload {
+  loading: boolean;
+  error: string | null;
+}
+
+const UserInfo = (
+  state: UserInfoState,
+  action: UserInfoAction
+): UserInfoState => {
   switch (action.type) {
     case "initial data load start":
       return {

client/src/util/actionHelpers.ts

@@ -1,15 +1,14 @@
 import sortBy from "lodash.sortby";
 /* XXX: cough, cough, ... */
 import { postNetworkErrorToast } from "../components/framework/toasters";
+import type { AppDispatch, RootState } from "../reducers";
 
 /*
 dispatch an action error to the user.   Currently we use
 async toasts.
 */
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-let networkErrorToastKey: any = null;
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const dispatchNetworkErrorMessageToUser = (message: any) => {
+let networkErrorToastKey: string | null = null;
+export const dispatchNetworkErrorMessageToUser = (message: string): void => {
   if (!networkErrorToastKey) {
     networkErrorToastKey = postNetworkErrorToast(message);
   } else {
@@ -20,12 +19,12 @@ export const dispatchNetworkErrorMessageToUser = (message: any) => {
 /*
 Catch unexpected errors and make sure we don't lose them!
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export function catchErrorsWrap(fn: any, dispatchToUser = false) {
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  return (dispatch: any, getState: any) => {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    fn(dispatch, getState).catch((error: any) => {
+export function catchErrorsWrap(
+  fn: (dispatch: AppDispatch, getState: () => RootState) => Promise<void>,
+  dispatchToUser = false
+) {
+  return (dispatch: AppDispatch, getState: () => RootState): void => {
+    fn(dispatch, getState).catch((error: Error) => {
       console.error(error);
       if (dispatchToUser) {
         dispatchNetworkErrorMessageToUser(error.message);
@@ -39,8 +38,10 @@ export function catchErrorsWrap(fn: any, dispatchToUser = false) {
  * Wrapper to perform async fetch with some modest error handling
  * and decoding.  Arguments are identical to standard fetch.
  */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const doFetch = async (url: any, init = {}) => {
+export const doFetch = async (
+  url: string,
+  init?: RequestInit
+): Promise<Response> => {
   try {
     // add defaults to the fetch init param.
     init = {
@@ -48,13 +49,11 @@ export const doFetch = async (url: any, init = {}) => {
       credentials: "include",
       ...init,
     };
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    const acceptType = (init as any).headers?.get("Accept");
+    const acceptType = (init.headers as Headers)?.get("Accept");
     const res = await fetch(url, init);
     if (
       res.ok &&
-      // @ts-expect-error ts-migrate(2531) FIXME: Object is possibly 'null'.
-      (!acceptType || res.headers.get("Content-Type").includes(acceptType))
+      (!acceptType || res.headers?.get("Content-Type")?.includes(acceptType))
     ) {
       return res;
     }
@@ -74,8 +73,10 @@ export const doFetch = async (url: any, init = {}) => {
 /*
 Wrapper to perform an async fetch and JSON decode response.
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const doJsonRequest = async (url: any, init = {}) => {
+export const doJsonRequest = async <T = unknown>(
+  url: string,
+  init?: RequestInit
+): Promise<T> => {
   const res = await doFetch(url, {
     ...init,
     headers: new Headers({ Accept: "application/json" }),
@@ -86,8 +87,10 @@ export const doJsonRequest = async (url: any, init = {}) => {
 /*
 Wrapper to perform an async fetch for binary data.
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const doBinaryRequest = async (url: any, init = {}) => {
+export const doBinaryRequest = async (
+  url: string,
+  init?: RequestInit
+): Promise<ArrayBuffer> => {
   const res = await doFetch(url, {
     ...init,
     headers: new Headers({ Accept: "application/octet-stream" }),
@@ -110,13 +113,11 @@ Parameters:
 
 So [1, 2, 3, 4, 10, 11, 14] -> [ [1, 4], [10, 11], 14]
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
 export const rangeEncodeIndices = (
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  indices: any,
+  indices: Array<number>,
   minRangeLength = 3,
   sorted = false
-) => {
+): Array<number | [number, number]> => {
   if (indices.length === 0) {
     return indices;
   }

client/src/util/camera.ts

@@ -1,4 +1,5 @@
 import { vec2, mat3 } from "gl-matrix";
+import clamp from "./clamp";
 
 const EPSILON = 0.000001;
 
@@ -11,56 +12,49 @@ const panBound = 0.8;
 const scratch0 = new Float32Array(16);
 const scratch1 = new Float32Array(16);
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-function clamp(val: any, rng: any) {
-  return Math.max(Math.min(val, rng[1]), rng[0]);
-}
-
 class Camera {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  canvas: any;
+  canvas: HTMLCanvasElement;
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  prevEvent: any;
+  prevEvent: {
+    clientX: number;
+    clientY: number;
+    type: string;
+  };
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  viewMatrix: any;
+  viewMatrix: mat3;
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  viewMatrixInv: any;
+  viewMatrixInv: mat3;
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  constructor(canvas: any) {
+  constructor(canvas: HTMLCanvasElement) {
     this.prevEvent = {
       clientX: 0,
       clientY: 0,
-      type: 0,
+      type: "",
     };
     this.canvas = canvas;
     this.viewMatrix = mat3.create();
     this.viewMatrixInv = mat3.create();
   }
 
-  view() {
+  view(): mat3 {
     return this.viewMatrix;
   }
 
-  invView() {
+  invView(): mat3 {
     return this.viewMatrixInv;
   }
 
-  distance() {
+  distance(): number {
     return this.viewMatrix[0];
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  pan(dx: any, dy: any) {
+  pan(dx: number, dy: number): void {
     const m = this.viewMatrix;
-    const dyRange = [
+    const dyRange: [number, number] = [
       -panBound - (m[7] + 1) / m[4],
       panBound - (m[7] - 1) / m[4],
     ];
-    const dxRange = [
+    const dxRange: [number, number] = [
       -panBound - (m[6] + 1) / m[0],
       panBound - (m[6] - 1) / m[0],
     ];
@@ -74,13 +68,12 @@ class Camera {
     mat3.invert(this.viewMatrixInv, m);
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  zoomAt(d: any, x = 0, y = 0) {
+  zoomAt(d: number, x = 0, y = 0): void {
     /*
     Camera zoom at [x,y]
     */
     const m = this.viewMatrix;
-    const bounds = [-panBound, panBound];
+    const bounds: [number, number] = [-panBound, panBound];
     x = clamp(x, bounds);
     y = clamp(y, bounds);
 
@@ -98,15 +91,18 @@ class Camera {
   Event handling
   */
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  flush(e: any) {
+  flush(e: MouseEvent) {
     this.prevEvent.type = e.type;
     this.prevEvent.clientX = e.clientX;
     this.prevEvent.clientY = e.clientY;
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  localPosition(target: any, canvasX: any, canvasY: any, projectionInvTF: any) {
+  localPosition(
+    target: HTMLCanvasElement,
+    canvasX: number,
+    canvasY: number,
+    projectionInvTF: mat3
+  ): vec2 {
     /*
     Convert mouse position to local
     */
@@ -126,8 +122,7 @@ class Camera {
     return pos;
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  mousePan(e: any, projectionTF: any) {
+  mousePan(e: MouseEvent, projectionTF: mat3): true {
     const projectionInvTF = mat3.invert(scratch0, projectionTF);
     const pos = this.localPosition(
       this.canvas,
@@ -147,8 +142,7 @@ class Camera {
     return true;
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  wheelZoom(e: any, projectionTF: any) {
+  wheelZoom(e: WheelEvent, projectionTF: mat3): true {
     const { height } = this.canvas;
     const { deltaY, deltaMode, clientX, clientY } = e;
     const scale = scaleSpeed * (deltaMode === 1 ? 12 : 1) * (deltaY || 0);
@@ -164,8 +158,7 @@ class Camera {
     return true;
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  handleEvent(e: any, projectionTF: any) {
+  handleEvent(e: MouseEvent, projectionTF: mat3): boolean {
     /*
     process the event, and return true if camera view changed
     */
@@ -181,7 +174,7 @@ class Camera {
       }
 
       case "wheel": {
-        viewChanged = this.wheelZoom(e, projectionTF);
+        viewChanged = this.wheelZoom(e as WheelEvent, projectionTF);
         this.flush(e);
         break;
       }
@@ -194,8 +187,7 @@ class Camera {
   }
 }
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-function attachCamera(canvas: any) {
+function attachCamera(canvas: HTMLCanvasElement): Camera {
   return new Camera(canvas);
 }
 

client/src/util/catLabelSort.ts

@@ -11,24 +11,23 @@ TL;DR: sort order is:
 import isNumber from "is-number";
 import * as globals from "../globals";
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-function caseInsensitiveCompare(a: any, b: any) {
+function caseInsensitiveCompare(a: string, b: string): number {
   const textA = String(a).toUpperCase();
   const textB = String(b).toUpperCase();
   return textA < textB ? -1 : textA > textB ? 1 : 0;
 }
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-const catLabelSort = (isUserAnno: boolean, values: any[]): any[] => {
+const catLabelSort = (
+  isUserAnno: boolean,
+  values: Array<string>
+): Array<string> => {
   /* this sort could be memoized for perf */
 
   const strings: string[] = [];
-  const ints: number[] = [];
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  const unassignedOrNaN: any = [];
+  const ints: string[] = [];
+  const unassignedOrNaN: string[] = [];
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  values.forEach((v: any) => {
+  values.forEach((v: string) => {
     if (isUserAnno && v === globals.unassignedCategoryLabel) {
       unassignedOrNaN.push(v);
     } else if (String(v).toLowerCase() === "nan") {
@@ -44,8 +43,7 @@ const catLabelSort = (isUserAnno: boolean, values: any[]): any[] => {
   ints.sort((a, b) => +a - +b);
   unassignedOrNaN.sort(caseInsensitiveCompare);
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  return (<any>ints).concat(strings, unassignedOrNaN);
+  return ints.concat(strings, unassignedOrNaN);
 };
 
 export default catLabelSort;

client/src/util/centroid.ts

@@ -26,8 +26,7 @@ label -> {
 const getCoordinatesByLabel = (
   // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
   schema: any,
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  categoryName: any,
+  categoryName: string,
   categoryDf: Dataframe,
   // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
   layoutChoice: any,
@@ -73,7 +72,7 @@ const getCoordinatesByLabel = (
       let coords = coordsByCategoryLabel.get(label);
       if (coords === undefined) {
         // Get the number of cells which are in the label
-        // @ts-expect-error ts-migrate(2538) FIXME: Type 'unknown' cannot be used as an index type.
+        // @ts-expect-error ts-migrate(2538) FIXME: Blocked by StateManager/ControlsHelpers
         const numInLabel = categoryValueCounts[labelIndex];
         coords = {
           hasFinite: false,
@@ -99,7 +98,7 @@ const getCoordinatesByLabel = (
   return coordsByCategoryLabel;
 };
 
-/* 
+/*
   calcMedianCentroid calculates the median coordinates for labels in a given category
 
   label -> [x-Coordinate, y-Coordinate]
@@ -108,8 +107,7 @@ const getCoordinatesByLabel = (
 const calcMedianCentroid = (
   // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
   schema: any,
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  categoryName: any,
+  categoryName: string,
   categoryDf: Dataframe,
   // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
   layoutChoice: any,
@@ -151,8 +149,7 @@ const hashMedianCentroid = (
   // @ts-expect-error ts-migrate(6133) FIXME: 'schema' is declared but its value is never read.
   // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
   schema: any,
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  categoryName: any,
+  categoryName: string,
   categoryDf: Dataframe,
   // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
   layoutChoice: any,

client/src/util/clamp.ts

@@ -8,7 +8,6 @@
  * @returns a number
  */
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default function clamp(val: any, rng: any) {
+export default function clamp(val: number, rng: [number, number]): number {
   return Math.max(Math.min(val, rng[1]), rng[0]);
 }

client/src/util/clip.ts

@@ -1,17 +1,23 @@
+import { NumberArray } from "../common/types/arraytypes";
+
 /*
 clip - clip all values in a Array or TypedArray, IN PLACE.
 
 Values in array are clipped if less than `lower` or greater than `upper`.
 
 If `setTo` is undefined, values less than `lower` will be set to `lower`,
-and values greater than `upper` will be set to `upper`.  
+and values greater than `upper` will be set to `upper`.
 
-If `setTo` is not undefined, values outside the [lower, upper] range will be set to 
+If `setTo` is not undefined, values outside the [lower, upper] range will be set to
 `setTo`.
 
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default function clip(arr: any, lower: any, upper: any, setTo: any) {
+export default function clip(
+  arr: NumberArray,
+  lower: number,
+  upper: number,
+  setTo?: number
+): NumberArray {
   const lowerSet = setTo === undefined ? lower : setTo;
   const upperSet = setTo === undefined ? upper : setTo;
   for (let i = 0, l = arr.length; i < l; i += 1) {

client/src/util/finiteExtent.ts

@@ -6,8 +6,11 @@ If undefined or empty array, or array contains only non-finite numbers,
 will return [undefined, undefined]
 */
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-function finiteExtent(tarr: any) {
+import type { TypedArray } from "../common/types/arraytypes";
+
+function finiteExtent(
+  tarr: TypedArray
+): [number, number] | [undefined, undefined] {
   let min;
   let max;
   let i;
@@ -21,14 +24,17 @@ function finiteExtent(tarr: any) {
       break;
     }
   }
-  for (; i < tarr.length; i += 1) {
-    const val = tarr[i];
-    if (Number.isFinite(val)) {
-      if (min > val) min = val;
-      if (max < val) max = val;
+  if (min !== undefined && max !== undefined) {
+    for (; i < tarr.length; i += 1) {
+      const val = tarr[i];
+      if (Number.isFinite(val)) {
+        if (min > val) min = val;
+        if (max < val) max = val;
+      }
     }
+    return [min, max];
   }
-  return [min, max];
+  return [undefined, undefined];
 }
 
 export default finiteExtent;

client/src/util/maybeScientific.ts

@@ -1,3 +1,4 @@
+import { ScaleLinear } from "d3";
 import significantDigits from "./significantDigits";
 
 /**
@@ -10,14 +11,14 @@ import significantDigits from "./significantDigits";
  * @returns - the number formatted as scientific, if it's big enough
  */
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default function maybeScientific(x: any) {
+export default function maybeScientific(
+  x: ScaleLinear<number, number, never>
+): string {
   let format = ",";
   const _ticks = x.ticks(4);
 
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  if (x.domain().some((n: any) => Math.abs(n) >= 10000)) {
-    /* 
+  if (x.domain().some((n: number) => Math.abs(n) >= 10000)) {
+    /*
           heuristic: if the last tick d3 wants to render has one significant
           digit ie., 2000, render 2e+3, but if it's anything else ie., 42000000 render
           4.20e+n

client/src/util/nameCreators.ts

@@ -13,43 +13,40 @@ anno matrix namespaces. It is still used by the component tier.
 
 */
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-const makeDimensionName = (namespace: any, key: any) => `${namespace}_${key}`;
+const makeDimensionName = (namespace: string, key: string): string =>
+  `${namespace}_${key}`;
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const layoutDimensionName = (key: any) =>
+export const layoutDimensionName = (key: string): string =>
   makeDimensionName("layout", key);
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const obsAnnoDimensionName = (key: any) =>
+
+export const obsAnnoDimensionName = (key: string): string =>
   makeDimensionName("obsAnno", key);
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const diffexpDimensionName = (key: any) =>
+
+export const diffexpDimensionName = (key: string): string =>
   makeDimensionName("varData_diffexp", key);
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const userDefinedDimensionName = (key: any) =>
+
+export const userDefinedDimensionName = (key: string): string =>
   makeDimensionName("varData_userDefined", key);
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export const geneSetSummaryDimensionName = (key: any) =>
+
+export const geneSetSummaryDimensionName = (key: string): string =>
   makeDimensionName("geneSetSummary", key);
 
+export interface ContinuousNamespace {
+  isObs?: boolean;
+  isDiffExp?: boolean;
+  isUserDefined?: boolean;
+  isGeneSetSummary?: boolean;
+}
+
 /*
-    continuousNamespace = {
-    isObs: true,
-    isDiffExp: false,
-    isUserDefined: false,
-    isGeneSet: false,
-  }
 
   ie., makeContinuousDimensionName(continuousNamespace = {isObs: true}, "total_reads")
   see: histogram brush, as it doesn't know what type of continuous it was with only field
 */
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
 export const makeContinuousDimensionName = (
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  continuousNamespace: any,
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-  key: any
-) => {
+  continuousNamespace: ContinuousNamespace,
+  key: string
+): string => {
   let name;
   if (continuousNamespace.isObs) {
     name = obsAnnoDimensionName(key);

client/src/util/parseBulkGeneString.ts

@@ -6,7 +6,6 @@
 import pull from "lodash.pull";
 import uniq from "lodash.uniq";
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default function parseBulkGeneString(geneString: any) {
+export default function parseBulkGeneString(geneString: string): Array<string> {
   return pull(uniq(geneString.split(/[ ,]+/)), "");
 }

client/src/util/parseRGB.ts

@@ -4,32 +4,27 @@ import scaleRGB from "./scaleRGB";
 // to do this operation.  This lets us have speed, but keep the pleasant ability
 // to talk about colors by their text description eg, 'rgb(0,0,1)'
 //
-const colorCache = {};
+const colorCache = {} as { [key: string]: [number, number, number] };
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-function parseColorName(c: any) {
+function parseColorName(c: string): [number, number, number] {
   if (c[0] !== "#") {
     const _c = c.replace(/[^\d,.]/g, "").split(",");
     return [scaleRGB(+_c[0]), scaleRGB(+_c[1]), scaleRGB(+_c[2])];
   }
   const parsedHex = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(c);
+  if (!parsedHex || parsedHex.length < 4)
+    throw new Error(`Invalid hex color: ${c}`);
   return [
-    // @ts-expect-error ts-migrate(2531) FIXME: Object is possibly 'null'.
     scaleRGB(parseInt(parsedHex[1], 16)),
-    // @ts-expect-error ts-migrate(2531) FIXME: Object is possibly 'null'.
     scaleRGB(parseInt(parsedHex[2], 16)),
-    // @ts-expect-error ts-migrate(2531) FIXME: Object is possibly 'null'.
     scaleRGB(parseInt(parsedHex[3], 16)),
   ];
 }
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default (c: any) => {
-  // @ts-expect-error ts-migrate(7053) FIXME: Element implicitly has an 'any' type because expre... Remove this comment to see the full error message
+export default (c: string): [number, number, number] => {
   let cv = colorCache[c];
   if (!cv) {
     cv = parseColorName(c);
-    // @ts-expect-error ts-migrate(7053) FIXME: Element implicitly has an 'any' type because expre... Remove this comment to see the full error message
     colorCache[c] = cv;
   }
   return cv;

client/src/util/promiseLimit.ts

@@ -28,37 +28,55 @@ Priority is a numeric value.  Lower first.  Stable ordering.
 
 import TinyQueue from "tinyqueue";
 
-// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'a' implicitly has an 'any' type.
-function compare(a, b) {
+function compare<T>(
+  a: PromiseLimitQueueItem<T>,
+  b: PromiseLimitQueueItem<T>
+): number {
   const diff = a.priority - b.priority;
   if (diff) return diff;
   return a.order - b.order;
 }
 
-export default class PromiseLimit {
+interface PromiseLimitQueueItem<T> {
+  priority: number;
+  order: number;
+  resolve: (value: T | PromiseLike<T>) => void;
+  reject: (reason?: unknown) => void;
+  fn: (...args: Array<unknown>) => Promise<T>;
+  args: Array<unknown>;
+}
+
+export default class PromiseLimit<T> {
+  queue: TinyQueue<PromiseLimitQueueItem<T>>;
+
+  maxConcurrency: number;
+
+  pending: number;
+
+  insertCounter: number;
+
   constructor(maxConcurrency = 5) {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    (this as any).queue = new TinyQueue([], compare);
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    (this as any).maxConcurrency = maxConcurrency;
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    (this as any).pending = 0;
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    (this as any).insertCounter = 0;
+    this.queue = new TinyQueue<PromiseLimitQueueItem<T>>(
+      new Array<PromiseLimitQueueItem<T>>(),
+      compare
+    );
+    this.maxConcurrency = maxConcurrency;
+    this.pending = 0;
+    this.insertCounter = 0;
   }
 
-  // @ts-expect-error ts-migrate(7006) FIXME: Parameter 'p' implicitly has an 'any' type.
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-  priorityAdd(p, fn, ...args) {
+  priorityAdd(
+    p: number,
+    fn: () => Promise<T>,
+    ...args: Array<unknown>
+  ): Promise<T> {
     // p - numermic priority (lower first)
     // fn - must return a promise
     // args - will be passed to fn
     return this._push(p, fn, args);
   }
 
-  // @ts-expect-error ts-migrate(7006) FIXME: Parameter 'fn' implicitly has an 'any' type.
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-  add(fn, ...args) {
+  add(fn: () => Promise<T>, ...args: Array<unknown>): Promise<T> {
     // fn - must return a promise
     // args - will be passed to fn
     return this._push(0, fn, args);
@@ -68,35 +86,25 @@ export default class PromiseLimit {
   Private below
   **/
 
-  // @ts-expect-error ts-migrate(7006) FIXME: Parameter 'priority' implicitly has an 'any' type.
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-  _push(priority, fn, args) {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    const order = (this as any).insertCount;
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    (this as any).insertCount += 1;
+  _push(
+    priority: number,
+    fn: () => Promise<T>,
+    args: Array<unknown>
+  ): Promise<T> {
+    const order = this.insertCounter;
+    this.insertCounter += 1;
     return new Promise((resolve, reject) => {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-      (this as any).queue.push({ priority, order, fn, args, resolve, reject });
+      this.queue.push({ priority, order, fn, args, resolve, reject });
       this._resolveNext(false);
     });
   }
 
-  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-  _resolveNext = (completed = true) => {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-    if (completed) (this as any).pending -= 1;
+  _resolveNext = (completed = true): void => {
+    if (completed) this.pending -= 1;
 
-    while (
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-      (this as any).queue.length > 0 &&
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-      (this as any).pending < (this as any).maxConcurrency
-    ) {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-      const task = (this as any).queue.pop(); // order of insertion
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-      (this as any).pending += 1;
+    while (this.queue.length > 0 && this.pending < this.maxConcurrency) {
+      const task = this.queue.pop() as PromiseLimitQueueItem<T>; // order of insertion
+      this.pending += 1;
       const { resolve, reject, fn, args } = task;
 
       try {

client/src/util/range.ts

@@ -22,38 +22,44 @@ rangeFill(array, start, step) -> array
 
 */
 
-// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'arr' implicitly has an 'any' type.
-function _doFill(arr, start, step, count) {
+import { TypedArray, NumberArray } from "../common/types/arraytypes";
+
+function _doFill<T extends NumberArray>(
+  arr: T,
+  start: number,
+  step: number,
+  count: number
+): T {
   for (let idx = 0, val = start; idx < count; idx += 1, val += step) {
     arr[idx] = val;
   }
   return arr;
 }
 
-// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'arr' implicitly has an 'any' type.
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-export function rangeFill(arr, start = 0, step = 1) {
+export function rangeFill(arr: NumberArray, start = 0, step = 1): NumberArray {
   return _doFill(arr, start, step, arr.length);
 }
 
-// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'start' implicitly has an 'any' type.
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-export function range(start, stop, step) {
+export function range(
+  start: number,
+  stop?: number,
+  step?: number
+): Array<number> {
   if (start === undefined) return [];
   if (stop === undefined) {
     stop = start;
     start = 0;
   }
-  step = step || 1; // catch undefind and zero
+  step = step || 1; // catch undefined and zero
   const len = Math.max(Math.ceil((stop - start) / step), 0);
   return _doFill(new Array(len), start, step, len);
 }
 
-// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'start' implicitly has an 'any' type.
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types --- FIXME: disabled temporarily on migrate to TS.
-export function linspace(start, stop, nsteps) {
-  // @ts-expect-error ts-migrate(2363) FIXME: The right-hand side of an arithmetic operation mus... Remove this comment to see the full error message
-  const delta = (stop - start) / (nsteps - 1).toFixed();
-  // @ts-expect-error ts-migrate(7006) FIXME: Parameter 'i' implicitly has an 'any' type.
+export function linspace(
+  start: number,
+  stop: number,
+  nsteps: number
+): Array<number> {
+  const delta = (stop - start) / Number((nsteps - 1).toFixed());
   return range(0, nsteps, 1).map((i) => start + i * delta);
 }

client/src/util/renderThrottle.ts

@@ -1,20 +1,17 @@
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default function renderThrottle(callback: any) {
+export default function renderThrottle<T>(
+  callback: (this: T) => void
+): (this: T) => void {
   /*
   This wraps a call to requestAnimationFrame(), enforcing a single
   render callback at any given time (ie, you can call this any number
   of times, and it will coallesce multiple inter-frame calls into a
   single render).
   */
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  let rafCurrentlyInProgress: any = null;
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  return function f(this: any) {
-    if (rafCurrentlyInProgress) return;
-    // eslint-disable-next-line @typescript-eslint/no-this-alias --- FIXME: disabled temporarily on migrate to TS.
-    const context = this;
+  let rafCurrentlyInProgress: number | null = null;
+  return function f(this: T) {
+    if (rafCurrentlyInProgress) return; // eslint-disable-next-line @typescript-eslint/no-this-alias --- required for functionality
     rafCurrentlyInProgress = window.requestAnimationFrame(() => {
-      callback.apply(context);
+      callback.call<T, never, void>(this);
       rafCurrentlyInProgress = null;
     });
   };

client/src/util/scaleLinear.ts

@@ -6,18 +6,18 @@
 //     myScale(0) === -1
 // this is is equivalent to d3.scaleLinear().domain([0,1]).range([-1,1])
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default (domain: any, range: any) => {
+export default (
+  domain: [number, number],
+  range: [number, number]
+): ((value: number) => number) => {
   const domainStart = domain[0];
   const scale = (range[1] - range[0]) / (domain[1] - domain[0]);
   const invScale = 1 / scale;
   const rangeStart = range[0];
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  const f = (value: any) => (value - domainStart) * scale + rangeStart;
+  const f = (value: number) => (value - domainStart) * scale + rangeStart;
 
   // inverter
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any --- FIXME: disabled temporarily on migrate to TS.
-  f.invert = (value: any) => (value - rangeStart) * invScale + domainStart;
+  f.invert = (value: number) => (value - rangeStart) * invScale + domainStart;
 
   return f;
 };

client/src/util/scaleRGB.ts

@@ -1,5 +1,4 @@
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default (input: any) => {
+export default (input: number): number => {
   const outputMax = 1;
   const outputMin = 0;
 

client/src/util/significantDigits.ts

@@ -1,10 +1,11 @@
-/* 
+/*
     via https://github.com/nodef/extra-number/blob/master/scripts/significantDigits.js
 */
 
-// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any -- - FIXME: disabled temporarily on migrate to TS.
-export default (n: any) =>
+const significantDigits = (n: number): number =>
   n
     .toExponential()
     .replace(/e[+\-0-9]*$/, "")
     .replace(/^0\.?0*|\./, "").length;
+
+export default significantDigits;