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new exercise: resistor-color-duo
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Diff for: ‎config.json

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"text_formatting"
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]
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},
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{
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"slug": "resistor-color-duo",
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"uuid": "78645d36-12be-11ea-8d71-362b9e155667",
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"core": true,
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"unlocked_by": null,
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"difficulty": 2,
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"topics": [
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"strings",
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"arrays"
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]
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},
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{
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"slug": "leap",
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"uuid": "fb80f76c-42da-4f62-9f0f-8c85d984908b",

Diff for: ‎exercises/resistor-color-duo/.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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jest.config.js

Diff for: ‎exercises/resistor-color-duo/.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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"@typescript-eslint/array-type": "off", // Styling not forced upon the student
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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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], // Prevent bugs
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"@typescript-eslint/explicit-member-accessibility": "off", // Styling not forced upon the student
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"@typescript-eslint/indent": "off", // Styling not forced upon the student
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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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"@typescript-eslint/member-delimiter-style": "off", // Styling not forced upon the student
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"@typescript-eslint/no-non-null-assertion": "off",
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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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], // only disallow readonly without an access modifier
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"@typescript-eslint/no-unused-vars": "off", // Covered by the tsc compiler (noUnusedLocals)
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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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], // Prevent bugs, not styling
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"semi": "off", // Always disable base-rule
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"@typescript-eslint/semi": "off" // Styling not forced upon student
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}
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}

Diff for: ‎exercises/resistor-color-duo/README.md

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# Resistor Color Duo
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If you want to build something using a Raspberry Pi, you'll probably use _resistors_. For this exercise, you need to know two things about them:
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* Each resistor has a resistance value.
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* Resistors are small - so small in fact that if you printed the resistance value on them, it would be hard to read.
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To get around this problem, manufacturers print color-coded bands onto the resistors to denote their resistance values. Each band has a position and a numeric value. For example, if they printed a brown band (value 1) followed by a green band (value 5), it would translate to the number 15.
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In this exercise you are going to create a helpful program so that you don't have to remember the values of the bands. The program will take color names as input and output a two digit number, even if the input is more than two colors!
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The colors are mapped to the numbers from 0 to 9 in the sequence:
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Black - Brown - Red - Orange - Yellow - Green - Blue - Violet - Grey - White
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From the example above:
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brown-green should return 15
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brown-green-violet should return 15 too, ignoring the third color.
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## Setup
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Go through the setup instructions for Javascript to
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install the necessary dependencies:
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[https://exercism.io/tracks/javascript/installation](https://exercism.io/tracks/javascript/installation)
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## Requirements
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Install assignment dependencies:
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```bash
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$ npm 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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$ npm 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
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changing `xtest` to `test`.
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## Source
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Maud de Vries, Erik Schierboom [https://github.com/exercism/problem-specifications/issues/1464](https://github.com/exercism/problem-specifications/issues/1464)
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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 completed the exercise.

Diff for: ‎exercises/resistor-color-duo/jest.config.js

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module.exports = {
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verbose: true,
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projects: [
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'<rootDir>'
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],
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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$',
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'<rootDir>/test/fixtures',
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'<rootDir>/test/helpers',
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'__mocks__'
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],
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transform: {
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'^.+\\.[jt]sx?$': 'ts-jest',
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},
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};

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