TypeScript Deep Dive.pdf

TypeScript Deep Dive 英文无水印pdf pdf所有页面使用FoxitReader和PDF-XChangeViewer测试都可以打开 本资源转载自网络，如有侵权，请联系上传者或csdn删除globals. d ts1.5.3.2Namespaces1.5.4Nodes QuickstartBrowser Quick Start1.7Type Script's Type SystemJS Migration Guide1.8.1@types18.2Ambient declarations1.8.Declaration Files18.3.1Variables18.3.2Interfaces18.4Enums18.5lib.d ts1.8.6Functions18.7Type Assertion1.8.8Freshness18.9Type Guard1.8.10Literal Types1.8.11Readonly1.8.12Generics18.13Type Inference1.8.14Type Compatibility18.15Never Type1.8.16Discriminated Unions18.17Index Signatures18.18JSXOptions1.10nolmplicitAny1.10.1strictNul Checks1.10.2TIPSQuick Object Return1.11.1String Based Enums1.11.2Nominal Typing1.11.3Stateful functions1.11.4Bind is bad1.115Currying1.11.6Type InstantiationLazy object Literal InitializationClasses are Useful1.11.9Avoid Export Default1.11.10Limit Property Setters1.11.11null is bad1.11.12outFile caution1.11.13JQuery tips1.11.14static constructors1.11.15singleton pattern1.11.16Function parameters1.11.17Truth1.11.18Build Toggles1.11.19Style Guide1.12Common errors1.13Type Script Compiler Internals1.14Program1.14.1AST1.14.2TIP: Visit Children1.14.2.TIP: SyntaxKind enum1.14.2.2Trivia1.14.2.3Scanner1.14.3Parser1.144Parser Functions1.14.4.1Binder1.14.5Binder Functions1.14.5.1Binder declarations1.14.52Binder container1.14.5.3Binder symbolTable1.14.5.Binder Error Reporting1.14.55Checker1.14.6Checker Diagnostics1.14.6.1Checker Error Reporting1.14.62Emitter1.14.7Emitter functions1.14.7.1Emitter Source Maps1.14.7.2Contributing1.14.8IntroductionType Script Deep DiveI've been looking at the issues that turn up commonly when people start using Type ScriptThis is based on the lessons from StackOverflow /Definitely Typed and general engagementwith the TypeScript community. You can follow for updates and don't forget to on GithubReviewsThanks for the wonderful book Learned a lot from it. (ink)Its probably the Best Type Script book out there. Good Job(ink)Love how precise and clear the examples and explanations are! (link)For the low, low price of free, you get pages of pure awesomeness Chock full of sourcecode examples and clear, concise explanations, Type Script Deep Dive will help youlearn Type Script development. (ink)Just a big thank you! Best Type Script 2 detailed explanation! (link)This gitbook got my project going pronto Fluent easy read 5 stars (ink)I recommend the online #typescript book by @basara you'll love it (ink)I've always found this by @basarat really helpful (ink)We must highlight Type Script Deep Dive, an open source book. (link)Great online resource for learning.(link)Thank you for putting this book together, and for all your hard work within the Type Scriptcommunity. (ink)Type Script Deep Dive is one of the best technical texts Ive read in a while.(ink)Thanks @basarat for the Type Script Deep Dive Book. Help me a lot with my firstType Script project. (ink)Thanks to @basarat for this great #typescript learning resource. (link)Get StartedIf you are here to read the book online get startedOther OptionsYou can also download one of the followinEPUB for iPad iPhone, MacIntroductionPDF for Windows and othersMobi for KindleSpecial ThanksAll the amazing contributorsShareShareUrl:http://basarat.gitbooks.io/typescript/Getting StartedGetting Started with Type ScriptTypeScript VersionGetting Started with Type ScriptType Script compiles into JavaScript JavaScript is what you are actually going to execute(either in the browser or on the server). So you are going to need the followingType Script compiler(oss available in source and on NPM)A Type Script editor(you can use notepad if you want but I use alm. Also lots of otherIDES support it as wellbas tsx xdeclare var React: any i2 import ffoo) from./foo"iconst bar= foo4/** This is test comment *function test(a, b);81216o method tostringMumber,toString(radix2: auber t otrinmethod prEcisiono method toExponential Numbor. to2xgonontial(fractiomDigita?,nu.int notation with a specificd209 method tolocalestring Numher.toforalastring(locale?1 atringt1 number of digitska /Users/bas/repos/alm/tests/success/simple/bas tsx (1)(14:5) Property to does not exist on type number1 0 simple/msconfig son a /Users/bas/repos/alm/tests/success/simple/bas tsxType Script VersionInstead of using the stable Type Script compiler we will be presenting a lot of new stuff in thisbook that may not be associated with a version number yet. I generally recommend peopleto use the nightly version because the compiler test suite only catches more bugs overtimeYou can install it on the command line asnpm install -g typescript@nextGetting StartedAnd now the command line tsc will be the latest and greatest. Various IDEs support it tooe. galm always ships with the latest Type Script versionYou can ask vscode to use this version by creating vscode/settings. json with thefollowing contentstypescript. tsdk":./node modules/typescript/libGetting the Source CodeThe source for this book is available in the books github repositoryhttps://github.com/basarat/typescript-book/tree/master/codemostofthecodesamplescanbe copied into alm and you can play with them as is For code samples that need additionalsetup(e.g npm modules), we will link you to the code sample before presenting the codee. gthis/will/be/the /link/to/the/code, tsThis will be the code under discussionWith a dev setup out of the way lets jump into Type Script syntaxWhy Type Scripthy TyIreScriptThere are two main goals of Type ScriptProvide an optional type system for JavaScriptProvide planned features from future Javascript editions to current JavaScript enginesThe desire for these goals is motivated below.The Type Script type systemYou might be wondering Why add types to JavaScript?Types have proven ability to enhance code quality and understandability. Large teams(google, microsoft, facebook have continually arrived at this conclusion. SpecificallyTypes increase your agility when doing refactoring. Its better for the compiler to catcherrors than to have things fail at runtimeTypes are one of the best forms of documentation you can have. The function signatureis a theorem and the function body is the proof.However types have a way of being unnecessarily ceremonious. Type Script is veryparticular about keeping the barrier to entry as low as possible. Here's howYour JavaScript is Type ScriptType Script provides compile time type safety for your Java Script code. This is no surprisegiven its name. The great thing is that the types are completely optional. Your JavaScriptcode. js file can be renamed to a ts file and Type Script will still give you back validis equivalent to the original JavaScript file. Type Script is intentionally and strictly asuperset of JavaScript with optional Type checkingTypes can be ImplicitType Script will try to infer as much of the type information as it can in order to give you typesafety with minimal cost of productivity during code development. For example, in thefollowing example Type Script will know that foo is of type number below and will give anerror on the second line as shown: