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Enable '--strictNullChecks' (#22088)

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* Enable '--strictNullChecks'

* Fix API baselines

* Make sys.getEnvironmentVariable non-nullable

* make properties optional instead of using `| undefined` in thier type

* reportDiagnostics should be required

* Declare firstAccessor as non-nullable

* Make `some` a type guard

* Fix `getEnvironmentVariable` definition in tests

* Pretend transformFlags are always defined

* Fix one more use of sys.getEnvironmentVariable

* `requiredResponse` accepts undefined, remove assertions

* Mark optional properties as optional instead of using `| undefined`

* Mark optional properties as optional instead of using ` | undefined`

* Remove unnecessary null assertions

* Put the bang on the declaration instead of every use

* Make `createMapFromTemplate` require a parameter

* Mark `EmitResult.emittedFiles` and `EmitResult.sourceMaps` as optional

* Plumb through undefined in emitLsit and EmitExpressionList

* `ElementAccessExpression.argumentExpression` can not be `undefined`

* Add overloads for `writeTokenText`

* Make `shouldWriteSeparatingLineTerminator` argument non-nullable

* Make `synthesizedNodeStartsOnNewLine` argument required

* `PropertyAssignment.initializer` cannot be undefined

* Use one `!` at declaration site instead of on every use site

* Capture host in a constant and avoid null assertions

* Remove few more unused assertions

* Update baselines

* Use parameter defaults

* Update baselines

* Fix lint

* Make Symbol#valueDeclaration and Symbol#declarations non-optional to reduce assertions

* Make Node#symbol and Type#symbol non-optional to reduce assertions

* Make `flags` non-nullable to reduce assertions

* Convert some asserts to type guards

* Make `isNonLocalAlias` a type guard

* Add overload for `getSymbolOfNode` for `Declaration`

* Some more `getSymbolOfNode` changes

* Push undefined suppression into `typeToTypeNodeHelper`

* `NodeBuilderContext.tracker` is never `undefined`

* use `Debug.assertDefined`

* Remove unnecessary tag

* Mark `LiteralType.freshType` and `LiteralTupe.regularType` as required
This commit is contained in:
Andy
2018-05-22 14:46:57 -07:00
committed by GitHub
parent 3fe946df78
commit e53e56cf82
167 changed files with 4846 additions and 4735 deletions
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8
src/services/preProcess.ts
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@@ -11,7 +11,7 @@ namespace ts {
moduleName: undefined
};
const importedFiles: FileReference[] = [];
let ambientExternalModules: { ref: FileReference, depth: number }[];
let ambientExternalModules: { ref: FileReference, depth: number }[] | undefined;
let lastToken: SyntaxKind;
let currentToken: SyntaxKind;
let braceNesting = 0;
@@ -336,11 +336,11 @@ namespace ts {
importedFiles.push(decl.ref);
}
}
return { referencedFiles: pragmaContext.referencedFiles, typeReferenceDirectives: pragmaContext.typeReferenceDirectives, importedFiles, isLibFile: pragmaContext.hasNoDefaultLib, ambientExternalModules: undefined };
return { referencedFiles: pragmaContext.referencedFiles, typeReferenceDirectives: pragmaContext.typeReferenceDirectives, importedFiles, isLibFile: !!pragmaContext.hasNoDefaultLib, ambientExternalModules: undefined };
}
else {
// for global scripts ambient modules still can have augmentations - look for ambient modules with depth > 0
let ambientModuleNames: string[];
let ambientModuleNames: string[] | undefined;
if (ambientExternalModules) {
for (const decl of ambientExternalModules) {
if (decl.depth === 0) {
@@ -354,7 +354,7 @@ namespace ts {
}
}
}
return { referencedFiles: pragmaContext.referencedFiles, typeReferenceDirectives: pragmaContext.typeReferenceDirectives, importedFiles, isLibFile: pragmaContext.hasNoDefaultLib, ambientExternalModules: ambientModuleNames };
return { referencedFiles: pragmaContext.referencedFiles, typeReferenceDirectives: pragmaContext.typeReferenceDirectives, importedFiles, isLibFile: !!pragmaContext.hasNoDefaultLib, ambientExternalModules: ambientModuleNames };
}
}
}