fix spelling errors

Author: mayn

doc/spec.md

@@ -3715,7 +3715,7 @@ the array literal initializer expression is contextually typed by the implied ty
 
 ## <a name="5.3"/>5.3 Let and Const Declarations
 
-Let and const declarations are exended to include optional type annotations.
+Let and const declarations are extended to include optional type annotations.
 
 &emsp;&emsp;*LexicalBinding:*  *( Modified )*  
 &emsp;&emsp;&emsp;*SimpleLexicalBinding*  

src/cancellationToken/cancellationToken.ts

@@ -35,8 +35,8 @@ function createCancellationToken(args: string[]): ServerCancellationToken {
     }
     // cancellationPipeName is a string without '*' inside that can optionally end with '*'
     // when client wants to signal cancellation it should create a named pipe with name=<cancellationPipeName>
-    // server will synchronously check the presence of the pipe and treat its existance as indicator that current request should be canceled.
-    // in case if client prefers to use more fine-grained schema than one name for all request it can add '*' to the end of cancelellationPipeName.
+    // server will synchronously check the presence of the pipe and treat its existence as indicator that current request should be canceled.
+    // in case if client prefers to use more fine-grained schema than one name for all request it can add '*' to the end of cancellationPipeName.
     // in this case pipe name will be build dynamically as <cancellationPipeName><request_seq>.
     if (cancellationPipeName.charAt(cancellationPipeName.length - 1) === "*") {
         const namePrefix = cancellationPipeName.slice(0, -1);

src/compiler/binder.ts

@@ -550,7 +550,7 @@ namespace ts {
                     }
                 }
                 // We create a return control flow graph for IIFEs and constructors. For constructors
-                // we use the return control flow graph in strict property intialization checks.
+                // we use the return control flow graph in strict property initialization checks.
                 currentReturnTarget = isIIFE || node.kind === SyntaxKind.Constructor ? createBranchLabel() : undefined;
                 currentBreakTarget = undefined;
                 currentContinueTarget = undefined;
@@ -3445,7 +3445,7 @@ namespace ts {
             // If a FunctionDeclaration is generator function and is the body of a
             // transformed async function, then this node can be transformed to a
             // down-level generator.
-            // Currently we do not support transforming any other generator fucntions
+            // Currently we do not support transforming any other generator functions
             // down level.
             if (node.asteriskToken) {
                 transformFlags |= TransformFlags.AssertGenerator;

src/compiler/builder.ts

@@ -27,7 +27,7 @@ namespace ts {
         currentChangedFilePath: Path | undefined;
         /**
          * Map of file signatures, with key being file path, calculated while getting current changed file's affected files
-         * These will be commited whenever the iteration through affected files of current changed file is complete
+         * These will be committed whenever the iteration through affected files of current changed file is complete
          */
         currentAffectedFilesSignatures: Map<string> | undefined;
         /**

src/compiler/builderState.ts

@@ -37,7 +37,7 @@ namespace ts {
          */
         readonly referencedMap: ReadonlyMap<BuilderState.ReferencedSet> | undefined;
         /**
-         * Contains the map of exported modules ReferencedSet=exorted module files from the file if module emit is enabled
+         * Contains the map of exported modules ReferencedSet=exported module files from the file if module emit is enabled
          * Otherwise undefined
          */
         readonly exportedModulesMap: Map<BuilderState.ReferencedSet> | undefined;
@@ -268,9 +268,9 @@ namespace ts.BuilderState {
      */
     export function getFilesAffectedBy(state: BuilderState, programOfThisState: Program, path: Path, cancellationToken: CancellationToken | undefined, computeHash: ComputeHash, cacheToUpdateSignature?: Map<string>, exportedModulesMapCache?: ComputingExportedModulesMap): ReadonlyArray<SourceFile> {
         // Since the operation could be cancelled, the signatures are always stored in the cache
-        // They will be commited once it is safe to use them
+        // They will be committed once it is safe to use them
         // eg when calling this api from tsserver, if there is no cancellation of the operation
-        // In the other cases the affected files signatures are commited only after the iteration through the result is complete
+        // In the other cases the affected files signatures are committed only after the iteration through the result is complete
         const signatureCache = cacheToUpdateSignature || createMap();
         const sourceFile = programOfThisState.getSourceFileByPath(path);
         if (!sourceFile) {

src/compiler/checker.ts

@@ -6311,7 +6311,7 @@ namespace ts {
             return false;
         }
 
-        /** A type parameter is thisless if its contraint is thisless, or if it has no constraint. */
+        /** A type parameter is thisless if its constraint is thisless, or if it has no constraint. */
         function isThislessTypeParameter(node: TypeParameterDeclaration) {
             const constraint = getEffectiveConstraintOfTypeParameter(node);
             return !constraint || isThislessType(constraint);
@@ -10012,10 +10012,10 @@ namespace ts {
                 if (checkType.flags & TypeFlags.Any) {
                     return getUnionType([instantiateType(root.trueType, combinedMapper || mapper), instantiateType(root.falseType, mapper)]);
                 }
-                // Return falseType for a definitely false extends check. We check an instantations of the two
+                // Return falseType for a definitely false extends check. We check an instantiations of the two
                 // types with type parameters mapped to the wildcard type, the most permissive instantiations
                 // possible (the wildcard type is assignable to and from all types). If those are not related,
-                // then no instatiations will be and we can just return the false branch type.
+                // then no instantiations will be and we can just return the false branch type.
                 if (!isTypeAssignableTo(getPermissiveInstantiation(checkType), getPermissiveInstantiation(inferredExtendsType))) {
                     return instantiateType(root.falseType, mapper);
                 }
@@ -14477,7 +14477,7 @@ namespace ts {
                             // that is _too good_ in projects with complicated constraints (eg, fp-ts). In such cases, if we did not limit ourselves
                             // here, we might produce more valid inferences for types, causing us to do more checks and perform more instantiations
                             // (in addition to the extra stack depth here) which, in turn, can push the already close process over its limit.
-                            // TL;DR: If we ever become generally more memory efficienct (or our resource budget ever increases), we should just
+                            // TL;DR: If we ever become generally more memory efficient (or our resource budget ever increases), we should just
                             // remove this `allowComplexConstraintInference` flag.
                             allowComplexConstraintInference = false;
                             return inferFromTypes(apparentSource, target);
@@ -18906,7 +18906,7 @@ namespace ts {
                 // if jsx emit was not react as there wont be error being emitted
                 reactSym.isReferenced = SymbolFlags.All;
 
-                // If react symbol is alias, mark it as refereced
+                // If react symbol is alias, mark it as referenced
                 if (reactSym.flags & SymbolFlags.Alias && !isConstEnumOrConstEnumOnlyModule(resolveAlias(reactSym))) {
                     markAliasSymbolAsReferenced(reactSym);
                 }
@@ -28256,7 +28256,7 @@ namespace ts {
             throwIfNonDiagnosticsProducing();
             if (sourceFile) {
                 // Some global diagnostics are deferred until they are needed and
-                // may not be reported in the firt call to getGlobalDiagnostics.
+                // may not be reported in the first call to getGlobalDiagnostics.
                 // We should catch these changes and report them.
                 const previousGlobalDiagnostics = diagnostics.getGlobalDiagnostics();
                 const previousGlobalDiagnosticsSize = previousGlobalDiagnostics.length;

src/compiler/commandLineParser.ts

@@ -1935,7 +1935,7 @@ namespace ts {
 
     function directoryOfCombinedPath(fileName: string, basePath: string) {
         // Use the `getNormalizedAbsolutePath` function to avoid canonicalizing the path, as it must remain noncanonical
-        // until consistient casing errors are reported
+        // until consistent casing errors are reported
         return getDirectoryPath(getNormalizedAbsolutePath(fileName, basePath));
     }