diff --git a/index.js b/index.js index 4ea6312..5226bc0 100644 --- a/index.js +++ b/index.js @@ -1,22 +1,49 @@ -function moveZeros(arr = '') { - function twistIt(str = '') { - return str.split('').map((a, i, arr) => arr[arr.length - i - 1]).join('') - } - return arr.split(' ').map(item => twistIt(item)).join(' ') -} - -console.log(moveZeros("double spaces"), "double spaces", '==>', "elbuod secaps") -console.log(moveZeros("double spaces"), "double spaces", '==>', "elbuod secaps") -console.log(moveZeros("double spaces"), "double spaces", '==>', "elbuod secaps") +function multiply(value, times) { + if (value === null) return null; + if (typeof times !== "number" || isNaN(times)) throw new Error(""); -function manhattanDistance(arr0, arr1) { - function fn(params) { + function checkTimes(n) { + if (n < 0 || times % 1 !== 0) { + throw new Error(""); + } + } - return Math.abs(params) + switch (typeof value) { + case "number": + if (times > Number.MAX_VALUE) { + throw new Error(""); + } + return value * times; + case "string": + checkTimes(times); + return times > 0 ? value.repeat(times) : ``; + case "object": + checkTimes(times); + return times > 0 ? Array(times).fill(value) : []; + case "function": + if (times === 0) return; + checkTimes(times); + return function () { + for (var i = 0; i < times; i++) { + value.apply(this, arguments); + } + }; + default: + return value; } - return (fn(arr0[0] - arr1[0]) + fn(arr0[1] - arr1[1])) } - -console.log(manhattanDistance([1, 1], [1, 1]), '=> returns 0') -console.log(manhattanDistance([5, 4], [3, 2]), '=> returns 4') -console.log(manhattanDistance([1, 1], [0, 3]), '=> returns 3') +console.log(function func() { + if (valid) { + console.log("still valid, original called"); + hits++; + if (this !== context) { + Test.expect(false, "Incorrect context."); + valid = false; + } else if ( + Test.inspect(Array.prototype.slice.call(arguments, 0)) === args + ) { + Test.expect(false, "Incorrect arguments."); + valid = false; + } + } +}, 222); // 4 diff --git a/index.ts b/index.ts new file mode 100644 index 0000000..e6082d9 --- /dev/null +++ b/index.ts @@ -0,0 +1,34 @@ +function multiply(value: any, times: number): any { + function checkTimes(n: number) { + if (n < 0) { + throw new Error(""); + } + } + + switch (typeof value) { + case "number": + if (times > Number.MAX_VALUE) { + throw new Error(""); + } + return value * times; + case "string": + checkTimes(times); + return times > 0 ? value.repeat(times) : ``; + case "object": + checkTimes(times); + return times > 0 ? Array(times).fill(value) : []; + default: + return value; + } + + if (times === 0) { + return ""; + } + return value.repeat(times); +} + +console.log(multiply("asd-", 2)); // 4 +console.log(multiply("asd-", 22)); // 484 +console.log(multiply("asd-", 2253)); // 49566 +console.log(multiply("asd-", 0)); // 0 +console.log(multiply("asd-", 145368722)); // 31186242668104 diff --git a/package-lock.json b/package-lock.json index f61b636..9b3ddcd 100644 --- a/package-lock.json +++ b/package-lock.json @@ -5,6 +5,7 @@ "packages": { "": { "devDependencies": { + "@types/node": "^16.7.10", "@typescript-eslint/eslint-plugin": "^4.14.1", "@typescript-eslint/parser": "^4.14.1", "eslint": "^7.19.0", @@ -199,6 +200,12 @@ "integrity": "sha512-YSBPTLTVm2e2OoQIDYx8HaeWJ5tTToLH67kXR7zYNGupXMEHa2++G8k+DczX2cFVgalypqtyZIcU19AFcmOpmg==", "dev": true }, + "node_modules/@types/node": { + "version": "16.7.10", + "resolved": "https://registry.npmjs.org/@types/node/-/node-16.7.10.tgz", + "integrity": "sha512-S63Dlv4zIPb8x6MMTgDq5WWRJQe56iBEY0O3SOFA9JrRienkOVDXSXBjjJw6HTNQYSE2JI6GMCR6LVbIMHJVvA==", + "dev": true + }, "node_modules/@typescript-eslint/eslint-plugin": { "version": "4.28.5", "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.28.5.tgz", @@ -2850,6 +2857,12 @@ "integrity": "sha512-YSBPTLTVm2e2OoQIDYx8HaeWJ5tTToLH67kXR7zYNGupXMEHa2++G8k+DczX2cFVgalypqtyZIcU19AFcmOpmg==", "dev": true }, + "@types/node": { + "version": "16.7.10", + "resolved": "https://registry.npmjs.org/@types/node/-/node-16.7.10.tgz", + "integrity": "sha512-S63Dlv4zIPb8x6MMTgDq5WWRJQe56iBEY0O3SOFA9JrRienkOVDXSXBjjJw6HTNQYSE2JI6GMCR6LVbIMHJVvA==", + "dev": true + }, "@typescript-eslint/eslint-plugin": { "version": "4.28.5", "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.28.5.tgz", diff --git a/package.json b/package.json index 0551e5a..ff9cf67 100644 --- a/package.json +++ b/package.json @@ -1,5 +1,6 @@ { "devDependencies": { + "@types/node": "^16.7.10", "@typescript-eslint/eslint-plugin": "^4.14.1", "@typescript-eslint/parser": "^4.14.1", "eslint": "^7.19.0", diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..05760f8 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,83 @@ +{ + "compilerOptions": { + /* Visit https://aka.ms/tsconfig.json to read more about this file */ + + /* Basic Options */ + // "incremental": true, /* Enable incremental compilation */ + "target": "ESNEXT" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */, + "module": "ESNext" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */, + "lib": [ + "DOM", + "ES5", + "ES2015", + "ES2016", + "ES2017", + "ES2018", + "ES2019", + "ES2020", + "ES2021", + "ESNEXT" + ] /* Specify library files to be included in the compilation. */, + // "allowJs": true, /* Allow javascript files to be compiled. */ + // "checkJs": true, /* Report errors in .js files. */ + // "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */ + // "declaration": true, /* Generates corresponding '.d.ts' file. */ + // "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */ + // "sourceMap": true, /* Generates corresponding '.map' file. */ + // "outFile": "./", /* Concatenate and emit output to single file. */ + // "outDir": "./", /* Redirect output structure to the directory. */ + // "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */ + // "composite": true, /* Enable project compilation */ + // "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */ + // "removeComments": true, /* Do not emit comments to output. */ + // "noEmit": true, /* Do not emit outputs. */ + // "importHelpers": true, /* Import emit helpers from 'tslib'. */ + // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */ + // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */ + + /* Strict Type-Checking Options */ + "strict": true /* Enable all strict type-checking options. */, + // "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */ + // "strictNullChecks": true, /* Enable strict null checks. */ + // "strictFunctionTypes": true, /* Enable strict checking of function types. */ + // "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */ + // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */ + // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */ + // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */ + + /* Additional Checks */ + // "noUnusedLocals": true, /* Report errors on unused locals. */ + // "noUnusedParameters": true, /* Report errors on unused parameters. */ + // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */ + // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */ + // "noUncheckedIndexedAccess": true, /* Include 'undefined' in index signature results */ + // "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an 'override' modifier. */ + // "noPropertyAccessFromIndexSignature": true, /* Require undeclared properties from index signatures to use element accesses. */ + + /* Module Resolution Options */ + // "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */ + // "baseUrl": "./", /* Base directory to resolve non-absolute module names. */ + // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */ + // "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */ + // "typeRoots": [], /* List of folders to include type definitions from. */ + // "types": [], /* Type declaration files to be included in compilation. */ + // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */ + "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */, + // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */ + // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */ + + /* Source Map Options */ + // "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */ + // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */ + // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */ + // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */ + + /* Experimental Options */ + // "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */ + // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */ + + /* Advanced Options */ + "skipLibCheck": true /* Skip type checking of declaration files. */, + "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */ + } +}