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RoshanjosseyrjossySleeplessByte
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Add exercise resistor color (#300)
* Add exercise resistor color Address issue #238 * Add entry for resitor color in config.json * Sync this exercise Co-authored-by: rjossy <[email protected]> Co-authored-by: Derk-Jan Karrenbeld <[email protected]>
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‎config.json

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"logic"
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]
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},
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{
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"slug": "resistor-color",
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"uuid": "c6f41fd5-584c-46ca-b3c5-6a0825446bf4",
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"core": true,
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"unlocked_by": null,
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"difficulty": 1,
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"topics": [
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"arrays",
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"strings"
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]
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},
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{
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"slug": "rna-transcription",
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"uuid": "b4db381f-1c99-44c6-948c-c8892d77823e",

‎exercises/resistor-color/.eslintignore

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bin/*
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dist/*
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docs/*
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node_modules/*
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production_node_modules/*
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test/fixtures/*
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tmp/*
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babel.config.js
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jest.config.js

‎exercises/resistor-color/.eslintrc

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{
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"root": true,
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"parser": "@typescript-eslint/parser",
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"parserOptions": {
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"project": "./tsconfig.json",
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"ecmaFeatures": {
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"jsx": true
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},
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"ecmaVersion": 2018,
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"sourceType": "module"
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},
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"env": {
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"browser": true,
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"es6": true
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},
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"extends": [
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"eslint:recommended",
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"plugin:@typescript-eslint/eslint-recommended",
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"plugin:@typescript-eslint/recommended"
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],
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"globals": {
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"Atomics": "readonly",
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"SharedArrayBuffer": "readonly"
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},
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"plugins": [
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"@typescript-eslint"
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],
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"rules": {
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// Code style not forced upon the student
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"@typescript-eslint/array-type": "off",
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// Prevent bugs
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"@typescript-eslint/explicit-function-return-type": [
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"warn", {
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"allowExpressions": false,
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"allowTypedFunctionExpressions": true,
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"allowHigherOrderFunctions": true
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}
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],
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// Code style not forced upon the student
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"@typescript-eslint/explicit-member-accessibility": "off",
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// Code style not forced upon the student
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"@typescript-eslint/indent": "off",
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"@typescript-eslint/no-inferrable-types": [
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"error", {
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"ignoreParameters": true
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}
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],
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// Code style not forced upon the student
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"@typescript-eslint/member-delimiter-style": "off",
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// Code style not forced upon the student
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"@typescript-eslint/no-non-null-assertion": "off",
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// Only disallow readonly without an access modifier
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"@typescript-eslint/no-parameter-properties": [
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"warn", {
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"allows": [
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"private", "protected", "public",
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"private readonly", "protected readonly", "public readonly"
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]
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}
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],
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// Covered by the tsc compiler (noUnusedLocals)
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"@typescript-eslint/no-unused-vars": "off",
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// Prevent bugs, not styling
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"@typescript-eslint/no-use-before-define": [
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"error", {
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"functions": false,
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"typedefs": false
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}
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],
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// Always disable base-rule
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"semi": "off",
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// Code style not forced upon student
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"@typescript-eslint/semi": "off"
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}
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}

‎exercises/resistor-color/README.md

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# Resistor Color
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Resistors have color coded bands, where each color maps to a number. The first 2 bands of a resistor have a simple encoding scheme: each color maps to a single number.
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These colors are encoded as follows:
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- Black: 0
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- Brown: 1
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- Red: 2
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- Orange: 3
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- Yellow: 4
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- Green: 5
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- Blue: 6
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- Violet: 7
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- Grey: 8
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- White: 9
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Mnemonics map the colors to the numbers, that, when stored as an array, happen to map to their index in the array: Better Be Right Or Your Great Big Values Go Wrong.
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More information on the color encoding of resistors can be found in the [Electronic color code Wikipedia article](https://en.wikipedia.org/wiki/Electronic_color_code)
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## Setup
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Go through the setup instructions for TypeScript to install the necessary
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dependencies:
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[https://exercism.io/tracks/typescript/installation](https://exercism.io/tracks/typescript/installation)
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## Requirements
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Install assignment dependencies:
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```bash
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$ yarn install
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```
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## Making the test suite pass
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Execute the tests with:
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```bash
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$ yarn test
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```
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In the test suites all tests but the first have been skipped.
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Once you get a test passing, you can enable the next one by changing `xit` to
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`it`.
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## Source
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https://github.com/exercism/problem-specifications/issues/1458
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have
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completed the exercise.

‎exercises/resistor-color/babel.config.js

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module.exports = {
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presets: [
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[
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"@babel/preset-env",
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{
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targets: {
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node: "current",
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},
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useBuiltIns: "entry",
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corejs: 3,
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},
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],
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"@babel/preset-typescript",
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],
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plugins: [
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"@babel/proposal-class-properties",
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"@babel/proposal-object-rest-spread",
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"@babel/plugin-syntax-bigint",
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],
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}

‎exercises/resistor-color/jest.config.js

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module.exports = {
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verbose: true,
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projects: ["<rootDir>"],
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testMatch: [
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"**/__tests__/**/*.[jt]s?(x)",
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"**/test/**/*.[jt]s?(x)",
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"**/?(*.)+(spec|test).[jt]s?(x)",
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],
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testPathIgnorePatterns: [
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"/(?:production_)?node_modules/",
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".d.ts$",
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"<rootDir>/test/fixtures",
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"<rootDir>/test/helpers",
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"__mocks__",
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],
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transform: {
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"^.+\\.[jt]sx?$": "babel-jest",
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},
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}

‎exercises/resistor-color/package.json

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{
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"name": "@exercism/typescript",
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"description": "Exercism exercises in Typescript.",
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"private": true,
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"repository": {
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"type": "git",
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"url": "https://github.com/exercism/typescript"
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},
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"devDependencies": {
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"@babel/core": "^7.12.10",
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"@babel/plugin-proposal-class-properties": "^7.12.1",
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"@babel/plugin-proposal-object-rest-spread": "^7.12.1",
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"@babel/plugin-syntax-bigint": "^7.8.3",
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"@babel/preset-env": "^7.12.10",
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"@babel/preset-typescript": "^7.12.7",
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"@types/jest": "^26.0.19",
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"@types/node": "^14.14.13",
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"@typescript-eslint/eslint-plugin": "^4.9.1",
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"@typescript-eslint/parser": "^4.9.1",
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"babel-jest": "^26.6.3",
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"core-js": "^3.8.1",
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"eslint": "^7.15.0",
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"eslint-plugin-import": "^2.22.1",
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"jest": "^26.6.3",
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"typescript": "^4.1.3"
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},
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"scripts": {
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"test": "yarn lint:types && jest --no-cache",
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"lint": "yarn lint:types && yarn lint:ci",
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"lint:types": "yarn tsc --noEmit -p .",
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"lint:ci": "eslint . --ext .tsx,.ts"
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},
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"dependencies": {}
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}

‎exercises/resistor-color/resistor-color.example.ts

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export const COLORS = ["black", "brown", "red", "orange", "yellow", "green", "blue", "violet", "grey", "white"]
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export const colorCode = (color: string): number => COLORS.indexOf(color)

‎exercises/resistor-color/resistor-color.test.ts

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import { colorCode, COLORS } from './resistor-color'
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describe('color code', () => {
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it('Black', () => {
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expect(colorCode('black')).toEqual(0)
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})
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xit('White', () => {
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expect(colorCode('white')).toEqual(9)
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})
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xit('Orange', () => {
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expect(colorCode('orange')).toEqual(3)
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})
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})
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describe('Colors', () => {
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xit('returns all colors', () => {
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expect(COLORS).toEqual(["black", "brown", "red", "orange", "yellow", "green", "blue", "violet", "grey", "white"])
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})
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})

‎exercises/resistor-color/resistor-color.ts

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export const colorCode = () => {
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throw new Error('Delete this line and implement this function')
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}
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export const COLORS = undefined;

‎exercises/resistor-color/tsconfig.json

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{
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"compilerOptions": {
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/* Basic Options */
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"target": "es2017", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
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"module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
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"lib": ["esnext", "es2016", "es2017"], /* Specify library files to be included in the compilation. */
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// "allowJs": true, /* Allow javascript files to be compiled. */
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// "checkJs": true, /* Report errors in .js files. */
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// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
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// "declaration": true, /* Generates corresponding '.d.ts' file. */
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// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
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// "sourceMap": true, /* Generates corresponding '.map' file. */
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// "outFile": "./", /* Concatenate and emit output to single file. */
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// "outDir": "./build", /* Redirect output structure to the directory. */
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// "rootDirs": ["./"], /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
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// "composite": true, /* Enable project compilation */
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// "removeComments": true, /* Do not emit comments to output. */
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"noEmit": true, /* Do not emit outputs. */
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// "importHelpers": true, /* Import emit helpers from 'tslib'. */
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// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
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"isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
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// "noEmitOnError": true, /* Do not emit outputs when compilation fails. */
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/* Strict Type-Checking Options */
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"strict": true, /* Enable all strict type-checking options. */
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// "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
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// "strictNullChecks": true, /* Enable strict null checks. */
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// "strictFunctionTypes": true, /* Enable strict checking of function types. */
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// "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
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// "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
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// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
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// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
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/* Additional Checks */
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// "noUnusedLocals": true, /* Report errors on unused locals. */
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"noUnusedParameters": true, /* Report errors on unused parameters. */
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// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
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// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
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/* Module Resolution Options */
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"moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
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// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
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// "paths": { "~src/*": ["./src/*"] }, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
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// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
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// "typeRoots": [], /* List of folders to include type definitions from. */
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// "types": [], /* Type declaration files to be included in compilation. */
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"allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
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"esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
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// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
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/* Source Map Options */
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// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
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// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
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// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
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// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
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/* Experimental Options */
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// "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
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// "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
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},
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"compileOnSave": true,
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"exclude": [
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"node_modules"
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]
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}

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