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noImplicitAny as suggestion #27693

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merged 5 commits into from Oct 11, 2018
Merged

noImplicitAny as suggestion #27693

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e6a57f7
noImplicitAny as suggestion
sandersn Oct 10, 2018
c835e0c
Rename reportImplicitAny+forbid it for non-checkJS
sandersn Oct 11, 2018
d2fad6a
Update baselines
sandersn Oct 11, 2018
c59c4eb
Use isCheckJsEnabledForFile
sandersn Oct 11, 2018
eea5553
Remove noImplicitAny parameter since it's in scope already
sandersn Oct 11, 2018
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24 changes: 14 additions & 10 deletions src/compiler/checker.ts
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Expand Up @@ -4915,7 +4915,7 @@ namespace ts {
}
const widened = getWidenedType(addOptionality(type, definedInMethod && !definedInConstructor));
if (filterType(widened, t => !!(t.flags & ~TypeFlags.Nullable)) === neverType) {
reportImplicitAnyError(noImplicitAny, symbol.valueDeclaration, anyType);
reportImplicitAny(noImplicitAny, symbol.valueDeclaration, anyType);
return anyType;
}
return widened;
Expand Down Expand Up @@ -4990,7 +4990,7 @@ namespace ts {
return result;
}
if (isEmptyArrayLiteralType(type)) {
reportImplicitAnyError(noImplicitAny, expression, anyArrayType);
reportImplicitAny(noImplicitAny, expression, anyArrayType);
return anyArrayType;
}
return type;
Expand Down Expand Up @@ -5041,7 +5041,7 @@ namespace ts {
return getTypeFromBindingPattern(element.name, includePatternInType, reportErrors);
}
if (reportErrors && !declarationBelongsToPrivateAmbientMember(element)) {
reportImplicitAnyError(noImplicitAny, element, anyType);
reportImplicitAny(noImplicitAny, element, anyType);
}
return anyType;
}
Expand Down Expand Up @@ -5143,7 +5143,7 @@ namespace ts {
// Report implicit any errors unless this is a private property within an ambient declaration
if (reportErrors) {
if (!declarationBelongsToPrivateAmbientMember(declaration)) {
reportImplicitAnyError(noImplicitAny, declaration, type);
reportImplicitAny(noImplicitAny, declaration, type);
}
}
return type;
Expand Down Expand Up @@ -13264,8 +13264,12 @@ namespace ts {
return errorReported;
}

function reportImplicitAnyError(noImplicitAny: boolean, declaration: Declaration, type: Type) {
function reportImplicitAny(noImplicitAny: boolean, declaration: Declaration, type: Type) {
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May be rename this to reportImplicitAnyErrorOrSuggestion instead?

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It's not necessary to take noImplicitAny as a parameter since that's already in scope. In every instance of calling this the argument is noImplicitAny; in one case the argument is true but it's within if (noImplicitAny).

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I chose to shorten it to reportImplicitAny

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@andy-ms good catch. I'll get rid of the parameter.

const typeAsString = typeToString(getWidenedType(type));
if (isInJSFile(declaration) && !getSourceFileOfNode(declaration).pragmas.has("checkJSDirective") && !compilerOptions.checkJs) {
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Do we even get here without checkJS? Also, this must be duplicate code of something?

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  1. Yes, allowJS reports errors as usual, but doesn't actually display them.
  2. Yes, isCheckJsEnabledForFile.

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So, why go out of our way to not report this error, if no errors will be shown anyway?

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Suggestions will still be shown, since they're stored in a separate array, and errorOrSuggestion at the bottom of the function will create a suggestion instead of an error in an allowJs file.

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#27852

// Only report implicit any errors/suggestions in TS and ts-check JS files
return;
}
let diagnostic: DiagnosticMessage;
switch (declaration.kind) {
case SyntaxKind.BinaryExpression:
Expand Down Expand Up @@ -13309,7 +13313,7 @@ namespace ts {
if (produceDiagnostics && noImplicitAny && type.flags & TypeFlags.ContainsWideningType) {
// Report implicit any error within type if possible, otherwise report error on declaration
if (!reportWideningErrorsInType(type)) {
reportImplicitAnyError(/*noImplicitAny*/ true, declaration, type);
reportImplicitAny(/*noImplicitAny*/ true, declaration, type);
}
}
}
Expand Down Expand Up @@ -22310,11 +22314,11 @@ namespace ts {
isTypeAssertion(initializer) ? type : getWidenedLiteralType(type);
if (isInJSFile(declaration)) {
if (widened.flags & TypeFlags.Nullable) {
reportImplicitAnyError(noImplicitAny, declaration, anyType);
reportImplicitAny(noImplicitAny, declaration, anyType);
return anyType;
}
else if (isEmptyArrayLiteralType(widened)) {
reportImplicitAnyError(noImplicitAny, declaration, anyArrayType);
reportImplicitAny(noImplicitAny, declaration, anyArrayType);
return anyArrayType;
}
}
Expand Down Expand Up @@ -23306,7 +23310,7 @@ namespace ts {
checkSourceElement(node.type);

if (!node.type) {
reportImplicitAnyError(noImplicitAny, node, anyType);
reportImplicitAny(noImplicitAny, node, anyType);
}

const type = <MappedType>getTypeFromMappedTypeNode(node);
Expand Down Expand Up @@ -24331,7 +24335,7 @@ namespace ts {
// Report an implicit any error if there is no body, no explicit return type, and node is not a private method
// in an ambient context
if (nodeIsMissing(body) && !isPrivateWithinAmbient(node)) {
reportImplicitAnyError(noImplicitAny, node, anyType);
reportImplicitAny(noImplicitAny, node, anyType);
}

if (functionFlags & FunctionFlags.Generator && nodeIsPresent(body)) {
Expand Down