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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
scripts/buildProtocol.ts
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@@ -8,7 +8,7 @@ function endsWith(s: string, suffix: string) {
}
function isStringEnum(declaration: ts.EnumDeclaration) {
return declaration.members.length && declaration.members.every(m => m.initializer && m.initializer.kind === ts.SyntaxKind.StringLiteral);
return declaration.members.length && declaration.members.every(m => !!m.initializer && m.initializer.kind === ts.SyntaxKind.StringLiteral);
}
class DeclarationsWalker {
@@ -30,7 +30,7 @@ class DeclarationsWalker {
text += "\ndeclare namespace ts {\n";
text += " // these types are empty stubs for types from services and should not be used directly\n"
for (const type of walker.removedTypes) {
text += ` export type ${type.symbol.name} = never;\n`;
text += ` export type ${type.symbol!.name} = never;\n`;
}
text += "}"
}
@@ -130,7 +130,7 @@ function writeProtocolFile(outputFile: string, protocolTs: string, typeScriptSer
function getInitialDtsFileForProtocol() {
const program = ts.createProgram([protocolTs, typeScriptServicesDts], options);
let protocolDts: string;
let protocolDts: string | undefined;
program.emit(program.getSourceFile(protocolTs), (file, content) => {
if (endsWith(file, ".d.ts")) {
protocolDts = content;
@@ -162,7 +162,7 @@ function writeProtocolFile(outputFile: string, protocolTs: string, typeScriptSer
let protocolDts = getInitialDtsFileForProtocol();
const program = getProgramWithProtocolText(protocolDts, /*includeTypeScriptServices*/ true);
const protocolFile = program.getSourceFile("protocol.d.ts");
const protocolFile = program.getSourceFile("protocol.d.ts")!;
const extraDeclarations = DeclarationsWalker.getExtraDeclarations(program.getTypeChecker(), protocolFile);
if (extraDeclarations) {
protocolDts += extraDeclarations;