Dentro da pasta alurabank, executei o comando 'npm init ' e foi criado package-lock.json e package.json. Usei o comando 'npm install typescript@2.3.2 --save-dev' para instalar o typescript como o professor sugere, na sequência apareceu uma pasta 'node_modules', até ai tudo bem. Renomeei a pasta 'js' para 'ts' e mudei as extensões dos arquivos 'Negociacao.js' e 'app.js' para 'Negociacao.ts' e 'app.ts'. Adicionei o "compile": "tsc" no package.json, salvei tudo e fechei o VScode e abri novamente. E executei o comando ' npm run compile'.
Observação: no index.html os scripts estão declarados assim :
<script src="js/app.js"></script>
<script src="js/models/Negociacao.js"></script>
Deu o seguinte erro no terminal :
Windows PowerShell
Copyright (C) 2016 Microsoft Corporation. Todos os direitos reservados.
PS C:\Users\x039426.SF\Desktop\alurabank> npm run compile
> alurabank@1.0.0 compile C:\Users\x039426.SF\Desktop\alurabank
> tsc
Version 2.3.2
Syntax: tsc [options] [file ...]
Examples: tsc hello.ts
tsc --outFile file.js file.ts
tsc @args.txt
Options:
-h, --help Print this message.
--all Show all compiler options.
-v, --version Print the compiler's version.
--init Initializes a TypeScript project and creates a tsconfig.json file.
-p FILE OR DIRECTORY, --project FILE OR DIRECTORY Compile the project given the path to its configuration file, or to a folder with a 'tsconfig.json'. --pretty Stylize errors and messages using color and context (experimental).
-w, --watch Watch input files.
-t VERSION, --target VERSION Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'.
-m KIND, --module KIND Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'.
--lib Specify library files to be included in the compilation:
'es5' 'es6' 'es2015' 'es7' 'es2016' 'es2017' 'esnext' 'dom' 'dom.iterable' 'webworker' 'scripthost' 'es2015.core' 'es2015.collection' 'es2015.generator' 'es2015.iterable' 'es2015.promise' 'es2015.proxy' 'es2015.reflect' 'es2015.symbol' 'es2015.symbol.wellknown' 'es2016.array.include' 'es2017.object' 'es2017.sharedmemory' 'es2017.string' 'esnext.asynciterable'
--allowJs Allow javascript files to be compiled.
--jsx KIND Specify JSX code generation: 'preserve', 'react-native', or 'react'.
-d, --declaration Generates corresponding '.d.ts' file.
--sourceMap Generates corresponding '.map' file.
--outFile FILE Concatenate and emit output to single file.
--outDir DIRECTORY Redirect output structure to the directory.
--removeComments Do not emit comments to output.
--noEmit Do not emit outputs.
--strict Enable all strict type-checking options.
--noImplicitAny Raise error on expressions and declarations with an implied 'any' type.
--strictNullChecks Enable strict null checks.
--noImplicitThis Raise error on 'this' expressions with an implied 'any' type.
--alwaysStrict Parse in strict mode and emit "use strict" for each source file.
--noUnusedLocals Report errors on unused locals.
--noUnusedParameters Report errors on unused parameters.
--noImplicitReturns Report error when not all code paths in function return a value.
--noFallthroughCasesInSwitch Report errors for fallthrough cases in switch statement.
--types Type declaration files to be included in compilation.
@<file> Insert command line options and files from a file.
PS C:\Users\x039426.SF\Desktop\alurabank>
