type=module

following d3/d3-format#112

.eslintrc.json

@@ -1,16 +1,7 @@
 {
+  "extends": "eslint:recommended",
   "parserOptions": {
     "sourceType": "module",
     "ecmaVersion": 8
-  },
-  "env": {
-    "es6": true,
-    "node": true,
-    "browser": true
-  },
-  "rules": {
-    "no-cond-assign": 0,
-    "no-constant-condition": 0,
-    "no-prototype-builtins": 0
   }
 }

.github/eslint.json

@@ -0,0 +1,18 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "eslint-compact",
+      "pattern": [
+        {
+          "regexp": "^(.+):\\sline\\s(\\d+),\\scol\\s(\\d+),\\s(Error|Warning|Info)\\s-\\s(.+)\\s\\((.+)\\)$",
+          "file": 1,
+          "line": 2,
+          "column": 3,
+          "severity": 4,
+          "message": 5,
+          "code": 6
+        }
+      ]
+    }
+  ]
+}

.github/workflows/node.js.yml

@@ -0,0 +1,30 @@
+# https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: Node.js CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: yarn --frozen-lockfile
+    - run: |
+        echo ::add-matcher::.github/eslint.json
+        yarn run eslint . --format=compact
+    - run: yarn test

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2020 Philippe Rivière
+Copyright (c) 2020-2021 Philippe Rivière
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

package.json

@@ -6,11 +6,11 @@
     "rotation"
   ],
   "license": "MIT",
-  "main": "dist/attitude.js",
+  "type": "module",
+  "main": "src/index.js",
+  "module": "src/index.js",
   "unpkg": "dist/attitude.min.js",
   "jsdelivr": "dist/attitude.min.js",
-  "module": "index",
-  "jsnext:main": "index",
   "homepage": "https://github.com/Fil/attitude",
   "repository": {
     "type": "git",
@@ -21,23 +21,25 @@
     "url": "https://github.com/Fil"
   },
   "scripts": {
-    "pretest": "rollup -c",
-    "test": "tape -r esm 'test/**/*-test.js' && eslint src",
-    "prepublishOnly": "rm -rf dist && yarn test",
+    "test": "mocha 'test/**/*-test.js' && eslint src test",
+    "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
     "postpublish": "git push && git push --tags && zip -j dist/${npm_package_name}.zip -- LICENSE README.md dist/${npm_package_name}.js dist/${npm_package_name}.min.js"
   },
   "dependencies": {},
   "sideEffects": false,
   "devDependencies": {
     "d3-geo": "1",
     "eslint": "6",
+    "mocha": "8",
     "eslint-plugin-es5": "1",
     "esm": "3",
     "package-preamble": "0.1",
     "rollup": "2",
     "rollup-plugin-terser": "7",
-    "tape": "4",
     "terser": "^3.8.2",
     "versor": "0.1"
+  },
+  "engines": {
+    "node": ">=12"
   }
 }

src/matrix.js

@@ -1,6 +1,6 @@
 import { versor_normalize } from "./versor.js";
-import { asin, atan2, degrees, radians, sqrt } from "./math.js";
-import { cospi, sinpi, tanpi, cartesiand, sphericald } from "./sinpi.js";
+import { asin, atan2, degrees, sqrt } from "./math.js";
+import { cospi, sinpi, cartesiand, sphericald } from "./sinpi.js";
 
 function transpose([[r11, r12, r13], [r21, r22, r23], [r31, r32, r33]]) {
   return [[r11, r21, r31], [r12, r22, r32], [r13, r23, r33]];

src/sinpi.js

@@ -37,8 +37,8 @@ export function cospi(x) {
 export function tanpi(x) {
   // tan(a/2 + pi/4) = tan(a)+sec(a)
   const a = abs(x),
-    s = sign(x),
-    i = a % 1;
+    s = sign(x);
+  let i = a % 1;
   return i > .2
     ? ((sinpi(2 * (i -= .25)) + 1) / cospi(2 * i)) * s
     : tan(pi * i) * s;

src/versor.js

@@ -6,7 +6,6 @@ import {
   degrees,
   hypot,
   pi,
-  radians,
   sqrt
 } from "./math.js";
 import { cospi, sinpi, cartesiand, sphericald } from "./sinpi.js";

test/.eslintrc.json

@@ -0,0 +1,10 @@
+{
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "sourceType": "module",
+    "ecmaVersion": 8
+  },
+  "env": {
+    "mocha": true
+  }
+}