Upgrade typescript, prettier, et al to continue to modernise build environment (#2519)

* Simplify nx config (no point separately caching es and js builds - they both need to be done for any code changes). Fix some no-op type definitions i.e. X extends any, and enforce templated property types as having to extend GeoJsonProperties throughout. * Upgrade typescript. Had to update topojson-* type defs to avoid the P = GeoJsonProperties problem in geojson-rbush. Also fix a couple of floating point precision related issues that eslint now apparently catches! * Retire tslint. * Upgrade eslint and prettier. Add minimal prettier config (defaults have changed) to avoid widespread, minor formatting changes (trailing commas mostly).
2025-12-08 20:26:16 +00:00 · 2023-10-24 21:51:43 +11:00 · 2023-10-24 21:51:43 +11:00 · e5afd5c38b
commit e5afd5c38b
parent 14a2ac5ead
126 changed files with 690 additions and 572 deletions
--- a/.eslintrc.js
+++ b/.eslintrc.js
@ -14,12 +14,12 @@ const rules = {
 module.exports = {
  root: true,
  ignorePatterns: ["**/dist/**"],
+  parser: "@typescript-eslint/parser",
  plugins: ["@typescript-eslint"],
  extends: [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
-    "prettier",
-    "prettier/@typescript-eslint",
+    "plugin:prettier/recommended",
  ],
  parserOptions: {
    ecmaVersion: 6,
--- a/.prettierignore
+++ b/.prettierignore
@ -10,3 +10,10 @@ packages/turf-directional-mean/test/in/bus_route_utm.json

 # is actually output
 packages/turf/turf.min.js
+
+# Ignore test fixture json in case intentional line breaks help with coord
+# readability.
+packages/turf-*/test/in/**
+packages/turf-*/test/out/**
+packages/turf-*/test/true/**
+packages/turf-*/test/false/**
--- a/.prettierrc.json
+++ b/.prettierrc.json
@ -1 +1,3 @@
-{}
+{
+  "trailingComma": "es5"
+}
--- a/examples/browser/index.html
+++ b/examples/browser/index.html
@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
--- a/examples/create-react-app/public/index.html
+++ b/examples/create-react-app/public/index.html
@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
--- a/examples/es-modules-single-module/index.html
+++ b/examples/es-modules-single-module/index.html
@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
--- a/examples/es-modules/index.html
+++ b/examples/es-modules/index.html
@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
  <head>
    <meta charset="utf-8" />
--- a/nx.json
+++ b/nx.json
@ -3,17 +3,7 @@
    "default": {
      "runner": "nx/tasks-runners/default",
      "options": {
-        "cacheableOperations": [
-          "build",
-          "build:es",
-          "build:js",
-          "test",
-          "test:tape",
-          "test:types",
-          "last-checks",
-          "last-checks:example",
-          "last-checks:testjs"
-        ]
+        "cacheableOperations": ["build", "test", "last-checks"]
      }
    }
  },
@ -22,31 +12,11 @@
      "dependsOn": ["^build"],
      "outputs": ["{projectRoot}/dist"]
    },
-    "build:es": {
-      "dependsOn": ["^build:es"],
-      "outputs": ["{projectRoot}/dist"]
-    },
-    "build:js": {
-      "dependsOn": ["^build:js"],
-      "outputs": ["{projectRoot}/dist"]
-    },
    "test": {
      "dependsOn": ["^test"]
    },
-    "test:tape": {
-      "dependsOn": ["^test:tape"]
-    },
-    "test:types": {
-      "dependsOn": ["^test:types"]
-    },
    "last-checks": {
      "dependsOn": ["^last-checks"]
-    },
-    "last-checks:example": {
-      "dependsOn": ["^last-checks:example"]
-    },
-    "last-checks:testjs": {
-      "dependsOn": ["^last-checks:testjs"]
    }
  }
 }
--- a/package.json
+++ b/package.json
@ -39,9 +39,9 @@
  },
  "devDependencies": {
    "@types/geojson": "7946.0.8",
-    "@types/node": "^17.0.21",
-    "@typescript-eslint/eslint-plugin": "^4.8.0",
-    "@typescript-eslint/parser": "^4.8.0",
+    "@types/node": "18.11.9",
+    "@typescript-eslint/eslint-plugin": "^6.8.0",
+    "@typescript-eslint/parser": "^6.8.0",
    "acorn": "^7.4.1",
    "camelcase": "*",
    "d3-queue": "*",
@ -49,8 +49,9 @@
    "dependency-tree": "^8.1.2",
    "documentation": "^14.0.2",
    "es-check": "^7.1.1",
-    "eslint": "~7.13.0",
-    "eslint-config-prettier": "^6.15.0",
+    "eslint": "^8.51.0",
+    "eslint-config-prettier": "^9.0.0",
+    "eslint-plugin-prettier": "^5.0.1",
    "esm": "^3.2.25",
    "fs-extra": "*",
    "husky": "^4.2.3",
@ -60,13 +61,13 @@
    "meow": "*",
    "monorepolint": "^0.5.0-alpha.20",
    "npm-run-all": "^4.1.5",
-    "prettier": "^2.1.2",
+    "prettier": "^3.0.3",
    "progress": "*",
    "rollup": "^2.34.2",
    "tape": "^5.7.0",
    "ts-node": "^9.0.0",
    "tsx": "^3.12.8",
-    "typescript": "^3.8.3",
+    "typescript": "^5.2.2",
    "yamljs": "*"
  }
 }
--- a/packages/turf-along/package.json
+++ b/packages/turf-along/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-angle/package.json
+++ b/packages/turf-angle/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-area/package.json
+++ b/packages/turf-area/package.json
@ -52,7 +52,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-bbox-clip/index.ts
+++ b/packages/turf-bbox-clip/index.ts
@ -37,7 +37,7 @@ import { lineclip, polygonclip } from "./lib/lineclip";
 */
 export default function bboxClip<
  G extends Polygon | MultiPolygon | LineString | MultiLineString,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(feature: Feature<G, P> | G, bbox: BBox) {
  const geom = getGeom(feature);
  const type = geom.type;
--- a/packages/turf-bbox-clip/package.json
+++ b/packages/turf-bbox-clip/package.json
@ -59,7 +59,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-bbox-polygon/index.ts
+++ b/packages/turf-bbox-polygon/index.ts
@ -18,7 +18,9 @@ import { polygon, Id } from "@turf/helpers";
 * //addToMap
 * var addToMap = [poly]
 */
-export default function bboxPolygon<P = GeoJsonProperties>(
+export default function bboxPolygon<
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  bbox: BBox,
  options: {
    properties?: P;
--- a/packages/turf-bbox-polygon/package.json
+++ b/packages/turf-bbox-polygon/package.json
@ -52,7 +52,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-bbox/package.json
+++ b/packages/turf-bbox/package.json
@ -53,7 +53,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-bearing/package.json
+++ b/packages/turf-bearing/package.json
@ -50,7 +50,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-bezier-spline/index.ts
+++ b/packages/turf-bezier-spline/index.ts
@ -33,7 +33,7 @@ import Spline from "./lib/spline";
 * var addToMap = [line, curved]
 * curved.properties = { stroke: '#0F0' };
 */
-function bezier<P = GeoJsonProperties>(
+function bezier<P extends GeoJsonProperties = GeoJsonProperties>(
  line: Feature<LineString> | LineString,
  options: {
    properties?: P;
--- a/packages/turf-bezier-spline/package.json
+++ b/packages/turf-bezier-spline/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-boolean-clockwise/package.json
+++ b/packages/turf-boolean-clockwise/package.json
@ -58,7 +58,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-concave/package.json
+++ b/packages/turf-boolean-concave/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-contains/package.json
+++ b/packages/turf-boolean-contains/package.json
@ -59,7 +59,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-crosses/package.json
+++ b/packages/turf-boolean-crosses/package.json
@ -58,7 +58,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-disjoint/package.json
+++ b/packages/turf-boolean-disjoint/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-equal/package.json
+++ b/packages/turf-boolean-equal/package.json
@ -62,7 +62,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-intersects/package.json
+++ b/packages/turf-boolean-intersects/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-overlap/package.json
+++ b/packages/turf-boolean-overlap/package.json
@ -61,7 +61,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-parallel/package.json
+++ b/packages/turf-boolean-parallel/package.json
@ -55,7 +55,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-boolean-point-in-polygon/index.ts
+++ b/packages/turf-boolean-point-in-polygon/index.ts
@ -38,7 +38,7 @@ import { getCoord, getGeom } from "@turf/invariant";
 */
 export default function booleanPointInPolygon<
  G extends Polygon | MultiPolygon,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  point: Coord,
  polygon: Feature<G, P> | G,
--- a/packages/turf-boolean-point-in-polygon/package.json
+++ b/packages/turf-boolean-point-in-polygon/package.json
@ -53,7 +53,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-point-on-line/package.json
+++ b/packages/turf-boolean-point-on-line/package.json
@ -54,7 +54,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-boolean-touches/package.json
+++ b/packages/turf-boolean-touches/package.json
@ -61,7 +61,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-valid/package.json
+++ b/packages/turf-boolean-valid/package.json
@ -59,7 +59,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-boolean-within/package.json
+++ b/packages/turf-boolean-within/package.json
@ -61,7 +61,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-center-mean/index.ts
+++ b/packages/turf-center-mean/index.ts
@ -28,7 +28,7 @@ import { isNumber, point, Id } from "@turf/helpers";
 * mean.properties['marker-size'] = 'large';
 * mean.properties['marker-color'] = '#000';
 */
-function centerMean<P = GeoJsonProperties>(
+function centerMean<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson: any, // To-Do include Typescript AllGeoJSON
  options: { properties?: P; bbox?: BBox; id?: Id; weight?: string } = {}
 ): Feature<Point, P> {
--- a/packages/turf-center-mean/package.json
+++ b/packages/turf-center-mean/package.json
@ -62,7 +62,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-center-median/package.json
+++ b/packages/turf-center-median/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-center-of-mass/index.ts
+++ b/packages/turf-center-of-mass/index.ts
@ -21,7 +21,7 @@ import { coordEach } from "@turf/meta";
 * //addToMap
 * var addToMap = [polygon, center]
 */
-function centerOfMass<P = GeoJsonProperties>(
+function centerOfMass<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson: any,
  options: {
    properties?: P;
--- a/packages/turf-center-of-mass/package.json
+++ b/packages/turf-center-of-mass/package.json
@ -52,7 +52,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-center/index.ts
+++ b/packages/turf-center/index.ts
@ -26,7 +26,7 @@ import { point, Id, AllGeoJSON } from "@turf/helpers";
 * center.properties['marker-size'] = 'large';
 * center.properties['marker-color'] = '#000';
 */
-function center<P = GeoJsonProperties>(
+function center<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson: AllGeoJSON,
  options: { properties?: P; bbox?: BBox; id?: Id } = {}
 ): Feature<Point, P> {
--- a/packages/turf-center/package.json
+++ b/packages/turf-center/package.json
@ -58,7 +58,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-centroid/index.ts
+++ b/packages/turf-centroid/index.ts
@ -18,7 +18,7 @@ import { coordEach } from "@turf/meta";
 * //addToMap
 * var addToMap = [polygon, centroid]
 */
-function centroid<P = GeoJsonProperties>(
+function centroid<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson: AllGeoJSON,
  options: {
    properties?: P;
--- a/packages/turf-centroid/package.json
+++ b/packages/turf-centroid/package.json
@ -55,7 +55,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-circle/index.ts
+++ b/packages/turf-circle/index.ts
@ -22,7 +22,7 @@ import { polygon, Units } from "@turf/helpers";
 * //addToMap
 * var addToMap = [turf.point(center), circle]
 */
-function circle<P = GeoJsonProperties>(
+function circle<P extends GeoJsonProperties = GeoJsonProperties>(
  center: number[] | Point | Feature<Point, P>,
  radius: number,
  options: {
--- a/packages/turf-circle/package.json
+++ b/packages/turf-circle/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-clean-coords/package.json
+++ b/packages/turf-clean-coords/package.json
@ -56,7 +56,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-clone/package.json
+++ b/packages/turf-clone/package.json
@ -54,7 +54,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-clusters-dbscan/package.json
+++ b/packages/turf-clusters-dbscan/package.json
@ -66,7 +66,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-clusters-kmeans/package.json
+++ b/packages/turf-clusters-kmeans/package.json
@ -67,7 +67,6 @@
    "matrix-to-grid": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-clusters/index.ts
+++ b/packages/turf-clusters/index.ts
@ -1,4 +1,9 @@
-import { Feature, FeatureCollection, GeometryObject } from "geojson";
+import {
+  Feature,
+  FeatureCollection,
+  GeoJsonProperties,
+  GeometryObject,
+} from "geojson";
 import { featureEach } from "@turf/meta";
 import { featureCollection } from "@turf/helpers";

@ -31,10 +36,10 @@ import { featureCollection } from "@turf/helpers";
 * turf.getCluster(clustered, {'marker-symbol': 'square'}).length;
 * //= 1
 */
-export function getCluster<G extends GeometryObject, P = any>(
-  geojson: FeatureCollection<G, P>,
-  filter: any
-): FeatureCollection<G, P> {
+export function getCluster<
+  G extends GeometryObject,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(geojson: FeatureCollection<G, P>, filter: any): FeatureCollection<G, P> {
  // Validation
  if (!geojson) throw new Error("geojson is required");
  if (geojson.type !== "FeatureCollection")
@ -99,7 +104,10 @@ export function getCluster<G extends GeometryObject, P = any>(
 *     values.push(clusterValue);
 * });
 */
-export function clusterEach<G extends GeometryObject, P = any>(
+export function clusterEach<
+  G extends GeometryObject,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson: FeatureCollection<G, P>,
  property: number | string,
  callback: (
@ -193,7 +201,10 @@ export function clusterEach<G extends GeometryObject, P = any>(
 *     return previousValue.concat(clusterValue);
 * }, []);
 */
-export function clusterReduce<G extends GeometryObject, P = any>(
+export function clusterReduce<
+  G extends GeometryObject,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson: FeatureCollection<G, P>,
  property: number | string,
  callback: (
--- a/packages/turf-clusters/package.json
+++ b/packages/turf-clusters/package.json
@ -56,7 +56,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-collect/package.json
+++ b/packages/turf-collect/package.json
@ -57,7 +57,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-combine/package.json
+++ b/packages/turf-combine/package.json
@ -52,7 +52,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-concave/package.json
+++ b/packages/turf-concave/package.json
@ -59,13 +59,12 @@
  },
  "devDependencies": {
    "@types/tape": "*",
-    "@types/topojson-client": "^3.0.0",
-    "@types/topojson-server": "^3.0.0",
+    "@types/topojson-client": "3.1.3",
+    "@types/topojson-server": "3.0.3",
    "benchmark": "*",
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-convex/index.ts
+++ b/packages/turf-convex/index.ts
@ -31,7 +31,7 @@ import concaveman from "concaveman";
 * //addToMap
 * var addToMap = [points, hull]
 */
-export default function convex<P = GeoJsonProperties>(
+export default function convex<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson: AllGeoJSON,
  options: {
    concavity?: number;
--- a/packages/turf-convex/package.json
+++ b/packages/turf-convex/package.json
@ -52,7 +52,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-destination/index.ts
+++ b/packages/turf-destination/index.ts
@ -37,7 +37,9 @@ import { getCoord } from "@turf/invariant";
 * destination.properties['marker-color'] = '#f00';
 * point.properties['marker-color'] = '#0f0';
 */
-export default function destination<P = GeoJsonProperties>(
+export default function destination<
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  origin: Coord,
  distance: number,
  bearing: number,
--- a/packages/turf-destination/package.json
+++ b/packages/turf-destination/package.json
@ -56,7 +56,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-directional-mean/package.json
+++ b/packages/turf-directional-mean/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-distance-weight/package.json
+++ b/packages/turf-distance-weight/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-distance/package.json
+++ b/packages/turf-distance/package.json
@ -52,7 +52,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-helpers/index.ts
+++ b/packages/turf-helpers/index.ts
@ -137,7 +137,7 @@ export const areaFactors: Record<AreaUnits, number> = {
 */
 export function feature<
  G extends GeometryObject = Geometry,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geom: G | null,
  properties?: P,
@ -214,7 +214,7 @@ export function geometry(
 *
 * //=point
 */
-export function point<P = GeoJsonProperties>(
+export function point<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position,
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -259,7 +259,7 @@ export function point<P = GeoJsonProperties>(
 *
 * //=points
 */
-export function points<P = GeoJsonProperties>(
+export function points<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -287,7 +287,7 @@ export function points<P = GeoJsonProperties>(
 *
 * //=polygon
 */
-export function polygon<P = GeoJsonProperties>(
+export function polygon<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[][],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -335,7 +335,7 @@ export function polygon<P = GeoJsonProperties>(
 *
 * //=polygons
 */
-export function polygons<P = GeoJsonProperties>(
+export function polygons<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[][][],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -365,7 +365,7 @@ export function polygons<P = GeoJsonProperties>(
 * //=linestring1
 * //=linestring2
 */
-export function lineString<P = GeoJsonProperties>(
+export function lineString<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -399,7 +399,7 @@ export function lineString<P = GeoJsonProperties>(
 *
 * //=linestrings
 */
-export function lineStrings<P = GeoJsonProperties>(
+export function lineStrings<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[][],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -436,7 +436,7 @@ export function lineStrings<P = GeoJsonProperties>(
 */
 export function featureCollection<
  G extends GeometryObject = Geometry,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  features: Array<Feature<G, P>>,
  options: { bbox?: BBox; id?: Id } = {}
@ -469,7 +469,9 @@ export function featureCollection<
 *
 * //=multiLine
 */
-export function multiLineString<P = GeoJsonProperties>(
+export function multiLineString<
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  coordinates: Position[][],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -498,7 +500,7 @@ export function multiLineString<P = GeoJsonProperties>(
 *
 * //=multiPt
 */
-export function multiPoint<P = GeoJsonProperties>(
+export function multiPoint<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -528,7 +530,7 @@ export function multiPoint<P = GeoJsonProperties>(
 * //=multiPoly
 *
 */
-export function multiPolygon<P = GeoJsonProperties>(
+export function multiPolygon<P extends GeoJsonProperties = GeoJsonProperties>(
  coordinates: Position[][][],
  properties?: P,
  options: { bbox?: BBox; id?: Id } = {}
@ -558,7 +560,9 @@ export function multiPolygon<P = GeoJsonProperties>(
 *
 * // => collection
 */
-export function geometryCollection<P = GeoJsonProperties>(
+export function geometryCollection<
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geometries: Array<
    Point | LineString | Polygon | MultiPoint | MultiLineString | MultiPolygon
  >,
--- a/packages/turf-helpers/package.json
+++ b/packages/turf-helpers/package.json
@ -58,7 +58,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-helpers/test.js
+++ b/packages/turf-helpers/test.js
@ -642,7 +642,7 @@ test("turf-helpers -- isNumber", (t) => {
  t.true(isNumber("123"));
  t.true(isNumber(+"123"));
  t.true(isNumber("1e10000"));
-  t.true(isNumber(1e10000));
+  t.true(isNumber(1e100));
  t.true(isNumber(Infinity));
  t.true(isNumber(-Infinity));

--- a/packages/turf-helpers/types.ts
+++ b/packages/turf-helpers/types.ts
@ -152,7 +152,7 @@ isNumber(-123);
 isNumber("123");
 isNumber(+"123");
 isNumber("1e10000");
-isNumber(1e10000);
+isNumber(1e100);
 isNumber(Infinity);
 isNumber(-Infinity);

--- a/packages/turf-hex-grid/bench.js
+++ b/packages/turf-hex-grid/bench.js
@ -1,6 +1,7 @@
 const Benchmark = require("benchmark");
 const grid = require("./index").default;

+// prettier-ignore
 var bbox = [
  -96.6357421875,
  31.12819929911196,
--- a/packages/turf-hex-grid/index.ts
+++ b/packages/turf-hex-grid/index.ts
@ -34,7 +34,7 @@ import { polygon, featureCollection, Units } from "@turf/helpers";
 * //addToMap
 * var addToMap = [hexgrid];
 */
-function hexGrid<P = GeoJsonProperties>(
+function hexGrid<P extends GeoJsonProperties = GeoJsonProperties>(
  bbox: BBox,
  cellSide: number,
  options: {
--- a/packages/turf-hex-grid/package.json
+++ b/packages/turf-hex-grid/package.json
@ -65,7 +65,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-hex-grid/types.ts
+++ b/packages/turf-hex-grid/types.ts
@ -1,6 +1,7 @@
 import { BBox } from "geojson";
 import hexGrid from "./index";

+// prettier-ignore
 const bbox: BBox = [
  -96.6357421875,
  31.12819929911196,
--- a/packages/turf-intersect/index.ts
+++ b/packages/turf-intersect/index.ts
@ -44,7 +44,9 @@ import polygonClipping from "polygon-clipping";
 * //addToMap
 * var addToMap = [poly1, poly2, intersection];
 */
-export default function intersect<P = GeoJsonProperties>(
+export default function intersect<
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  features: FeatureCollection<Polygon | MultiPolygon>,
  options: {
    properties?: P;
--- a/packages/turf-intersect/package.json
+++ b/packages/turf-intersect/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-invariant/index.ts
+++ b/packages/turf-invariant/index.ts
@ -71,7 +71,7 @@ export function getCoords<
    | Polygon
    | MultiPoint
    | MultiLineString
-    | MultiPolygon
+    | MultiPolygon,
 >(coords: any[] | Feature<G> | G): any[] {
  if (Array.isArray(coords)) {
    return coords;
--- a/packages/turf-invariant/package.json
+++ b/packages/turf-invariant/package.json
@ -54,7 +54,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-isobands/lib/marchingsquares-isobands.js
+++ b/packages/turf-isobands/lib/marchingsquares-isobands.js
@ -1626,7 +1626,15 @@ function computeBandGrid(data, minV, bandwidth) {
          lefttop,
          leftbottom;

-        topleft = topright = bottomleft = bottomright = righttop = rightbottom = lefttop = leftbottom = 0.5;
+        topleft =
+          topright =
+          bottomleft =
+          bottomright =
+          righttop =
+          rightbottom =
+          lefttop =
+          leftbottom =
+            0.5;

        var edges = [];

--- a/packages/turf-isobands/package.json
+++ b/packages/turf-isobands/package.json
@ -65,7 +65,6 @@
    "npm-run-all": "*",
    "rollup": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-isolines/package.json
+++ b/packages/turf-isolines/package.json
@ -64,7 +64,6 @@
    "npm-run-all": "*",
    "rollup": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-kinks/index.ts
+++ b/packages/turf-kinks/index.ts
@ -33,7 +33,7 @@ import { point } from "@turf/helpers";
 * var addToMap = [poly, kinks]
 */
 export default function kinks<
-  T extends LineString | MultiLineString | Polygon | MultiPolygon
+  T extends LineString | MultiLineString | Polygon | MultiPolygon,
 >(featureIn: Feature<T>): FeatureCollection<Point> {
  const results: FeatureCollection<Point> = {
    type: "FeatureCollection",
--- a/packages/turf-length/package.json
+++ b/packages/turf-length/package.json
@ -58,7 +58,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-line-intersect/index.ts
+++ b/packages/turf-line-intersect/index.ts
@ -30,7 +30,7 @@ import findIntersections, { Intersection } from "sweepline-intersections";
 */
 function lineIntersect<
  G1 extends LineString | MultiLineString | Polygon | MultiPolygon,
-  G2 extends LineString | MultiLineString | Polygon | MultiPolygon
+  G2 extends LineString | MultiLineString | Polygon | MultiPolygon,
 >(
  line1: FeatureCollection<G1> | Feature<G1> | G1,
  line2: FeatureCollection<G2> | Feature<G2> | G2,
--- a/packages/turf-line-intersect/package.json
+++ b/packages/turf-line-intersect/package.json
@ -58,7 +58,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-line-overlap/index.ts
+++ b/packages/turf-line-overlap/index.ts
@ -36,7 +36,7 @@ import equal from "deep-equal";
 */
 function lineOverlap<
  G1 extends LineString | MultiLineString | Polygon | MultiPolygon,
-  G2 extends LineString | MultiLineString | Polygon | MultiPolygon
+  G2 extends LineString | MultiLineString | Polygon | MultiPolygon,
 >(
  line1: Feature<G1> | G1,
  line2: Feature<G2> | G2,
--- a/packages/turf-line-overlap/package.json
+++ b/packages/turf-line-overlap/package.json
@ -58,7 +58,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-line-segment/index.ts
+++ b/packages/turf-line-segment/index.ts
@ -26,7 +26,7 @@ import { flattenEach } from "@turf/meta";
 * var addToMap = [polygon, segments]
 */
 function lineSegment<
-  G extends LineString | MultiLineString | Polygon | MultiPolygon
+  G extends LineString | MultiLineString | Polygon | MultiPolygon,
 >(
  geojson: Feature<G> | FeatureCollection<G> | G
 ): FeatureCollection<LineString> {
--- a/packages/turf-line-segment/package.json
+++ b/packages/turf-line-segment/package.json
@ -51,7 +51,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-line-slice/bench.js
+++ b/packages/turf-line-slice/bench.js
@ -7,7 +7,7 @@ var route1 = JSON.parse(fs.readFileSync(__dirname + "/test/in/route1.geojson"));
 var route2 = JSON.parse(fs.readFileSync(__dirname + "/test/in/route2.geojson"));
 var line1 = JSON.parse(fs.readFileSync(__dirname + "/test/in/line1.geojson"));

-var start1 = point([-97.79617309570312, 22.254624939561698]);
+var start1 = point([-97.79617309570313, 22.254624939561698]);
 var stop1 = point([-97.72750854492188, 22.057641623615734]);
 var start2 = point([-79.0850830078125, 37.60117623656667]);
 var stop2 = point([-77.7667236328125, 38.65119833229951]);
--- a/packages/turf-line-to-polygon/package.json
+++ b/packages/turf-line-to-polygon/package.json
@ -57,7 +57,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-meta/index.d.ts
+++ b/packages/turf-meta/index.d.ts
@ -17,7 +17,7 @@ import { AllGeoJSON, Lines, Id } from "@turf/helpers";
 /**
 * http://turfjs.org/docs/#coordreduce
 */
-export function coordReduce<Reducer extends any>(
+export function coordReduce<Reducer>(
  geojson: AllGeoJSON,
  callback: (
    previousValue: Reducer,
@ -56,7 +56,10 @@ export function propEach<Props extends GeoJsonProperties>(
 /**
 * http://turfjs.org/docs/#propreduce
 */
-export function propReduce<Reducer extends any, P = GeoJsonProperties>(
+export function propReduce<
+  Reducer,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson: Feature<any, P> | FeatureCollection<any, P> | Geometry,
  callback: (
    previousValue: Reducer,
@ -70,9 +73,9 @@ export function propReduce<Reducer extends any, P = GeoJsonProperties>(
 * http://turfjs.org/docs/#featurereduce
 */
 export function featureReduce<
-  Reducer extends any,
+  Reducer,
  G extends GeometryObject,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geojson:
    | Feature<G, P>
@ -89,7 +92,10 @@ export function featureReduce<
 /**
 * http://turfjs.org/docs/#featureeach
 */
-export function featureEach<G extends GeometryObject, P = GeoJsonProperties>(
+export function featureEach<
+  G extends GeometryObject,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson:
    | Feature<G, P>
    | FeatureCollection<G, P>
@ -106,9 +112,9 @@ export function coordAll(geojson: AllGeoJSON): number[][];
 * http://turfjs.org/docs/#geomreduce
 */
 export function geomReduce<
-  Reducer extends any,
+  Reducer,
  G extends GeometryObject,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geojson:
    | Feature<G, P>
@ -132,7 +138,7 @@ export function geomReduce<
 */
 export function geomEach<
  G extends GeometryObject | null,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geojson:
    | Feature<G, P>
@ -153,9 +159,9 @@ export function geomEach<
 * http://turfjs.org/docs/#flattenreduce
 */
 export function flattenReduce<
-  Reducer extends any,
+  Reducer,
  G extends GeometryObject,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geojson:
    | Feature<G, P>
@ -177,7 +183,7 @@ export function flattenReduce<
 */
 export function flattenEach<
  G extends GeometryObject = GeometryObject,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geojson:
    | Feature<G, P>
@ -195,7 +201,10 @@ export function flattenEach<
 /**
 * http://turfjs.org/docs/#segmentreduce
 */
-export function segmentReduce<Reducer extends any, P = GeoJsonProperties>(
+export function segmentReduce<
+  Reducer,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson:
    | FeatureCollection<Lines, P>
    | Feature<Lines, P>
@ -216,7 +225,7 @@ export function segmentReduce<Reducer extends any, P = GeoJsonProperties>(
 /**
 * http://turfjs.org/docs/#segmenteach
 */
-export function segmentEach<P = GeoJsonProperties>(
+export function segmentEach<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson: AllGeoJSON,
  callback: (
    currentSegment?: Feature<LineString, P>,
@ -230,7 +239,10 @@ export function segmentEach<P = GeoJsonProperties>(
 /**
 * http://turfjs.org/docs/#linereduce
 */
-export function lineReduce<Reducer extends any, P = GeoJsonProperties>(
+export function lineReduce<
+  Reducer,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson:
    | FeatureCollection<Lines, P>
    | Feature<Lines, P>
@ -250,7 +262,7 @@ export function lineReduce<Reducer extends any, P = GeoJsonProperties>(
 /**
 * http://turfjs.org/docs/#lineeach
 */
-export function lineEach<P = GeoJsonProperties>(
+export function lineEach<P extends GeoJsonProperties = GeoJsonProperties>(
  geojson:
    | FeatureCollection<Lines, P>
    | Feature<Lines, P>
@ -270,7 +282,7 @@ export function lineEach<P = GeoJsonProperties>(
 */
 export function findSegment<
  G extends LineString | MultiLineString | Polygon | MultiPolygon,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  geojson: Feature<G, P> | FeatureCollection<G, P> | G,
  options?: {
@ -287,7 +299,10 @@ export function findSegment<
 /**
 * http://turfjs.org/docs/#findpoint
 */
-export function findPoint<G extends GeometryObject, P = GeoJsonProperties>(
+export function findPoint<
+  G extends GeometryObject,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  geojson: Feature<G, P> | FeatureCollection<G, P> | G,
  options?: {
    featureIndex?: number;
--- a/packages/turf-meta/test.js
+++ b/packages/turf-meta/test.js
@ -1209,23 +1209,10 @@ test("meta.coordEach -- indexes -- Multi-Polygon with hole", (t) => {
  );

  t.deepEqual(featureIndexes, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
-  t.deepEqual(multiFeatureIndexes, [
-    0,
-    0,
-    0,
-    0,
-    0,
-    1,
-    1,
-    1,
-    1,
-    1,
-    1,
-    1,
-    1,
-    1,
-    1,
-  ]);
+  t.deepEqual(
+    multiFeatureIndexes,
+    [0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
+  );
  t.deepEqual(geometryIndexes, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1]);
  t.deepEqual(coordIndexes, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]);
  // Major Release Change v6.x
--- a/packages/turf-moran-index/package.json
+++ b/packages/turf-moran-index/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-nearest-neighbor-analysis/package.json
+++ b/packages/turf-nearest-neighbor-analysis/package.json
@ -54,7 +54,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-nearest-point-on-line/package.json
+++ b/packages/turf-nearest-point-on-line/package.json
@ -50,7 +50,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-nearest-point-to-line/package.json
+++ b/packages/turf-nearest-point-to-line/package.json
@ -60,7 +60,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-nearest-point/package.json
+++ b/packages/turf-nearest-point/package.json
@ -54,7 +54,6 @@
    "benchmark": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*"
  },
--- a/packages/turf-point-grid/index.ts
+++ b/packages/turf-point-grid/index.ts
@ -32,7 +32,7 @@ import { point, featureCollection, Units } from "@turf/helpers";
 * //addToMap
 * var addToMap = [grid];
 */
-function pointGrid<P = GeoJsonProperties>(
+function pointGrid<P extends GeoJsonProperties = GeoJsonProperties>(
  bbox: BBox,
  cellSide: number,
  options: {
--- a/packages/turf-point-grid/package.json
+++ b/packages/turf-point-grid/package.json
@ -59,7 +59,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-point-to-line-distance/package.json
+++ b/packages/turf-point-to-line-distance/package.json
@ -56,7 +56,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/packages/turf-points-within-polygon/index.d.ts
+++ b/packages/turf-points-within-polygon/index.d.ts
@ -14,7 +14,7 @@ import {
 export default function pointsWithinPolygon<
  F extends Point | MultiPoint,
  G extends Polygon | MultiPolygon,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  points: Feature<F, P> | FeatureCollection<F, P>,
  polygons: Feature<G> | FeatureCollection<G> | G
--- a/packages/turf-polygon-to-line/index.ts
+++ b/packages/turf-polygon-to-line/index.ts
@ -29,7 +29,7 @@ import { getGeom } from "@turf/invariant";
 */
 export default function <
  G extends Polygon | MultiPolygon,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  poly: Feature<G, P> | G,
  options: { properties?: any } = {}
@ -53,7 +53,10 @@ export default function <
 /**
 * @private
 */
-export function polygonToLine<G extends Polygon, P = GeoJsonProperties>(
+export function polygonToLine<
+  G extends Polygon,
+  P extends GeoJsonProperties = GeoJsonProperties,
+>(
  poly: Feature<G, P> | G,
  options: { properties?: any } = {}
 ): Feature<LineString | MultiLineString, P> {
@ -73,7 +76,7 @@ export function polygonToLine<G extends Polygon, P = GeoJsonProperties>(
 */
 export function multiPolygonToLine<
  G extends MultiPolygon,
-  P = GeoJsonProperties
+  P extends GeoJsonProperties = GeoJsonProperties,
 >(
  multiPoly: Feature<G, P> | G,
  options: { properties?: P } = {}
@ -96,7 +99,7 @@ export function multiPolygonToLine<
 /**
 * @private
 */
-export function coordsToLine<P = GeoJsonProperties>(
+export function coordsToLine<P extends GeoJsonProperties = GeoJsonProperties>(
  coords: number[][][],
  properties: P
 ): Feature<LineString | MultiLineString, P> {
--- a/packages/turf-polygon-to-line/package.json
+++ b/packages/turf-polygon-to-line/package.json
@ -53,7 +53,6 @@
    "load-json-file": "*",
    "npm-run-all": "*",
    "tape": "*",
-    "tslint": "*",
    "tsx": "*",
    "typescript": "*",
    "write-json-file": "*"
--- a/Show More
+++ b/Show More