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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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62 changes: 29 additions & 33 deletions src/compiler/checker.ts
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Expand Up @@ -4915,9 +4915,7 @@ namespace ts {
}
const widened = getWidenedType(addOptionality(type, definedInMethod && !definedInConstructor));
if (filterType(widened, t => !!(t.flags & ~TypeFlags.Nullable)) === neverType) {
if (noImplicitAny) {
reportImplicitAnyError(symbol.valueDeclaration, anyType);
}
reportImplicitAny(symbol.valueDeclaration, anyType);
return anyType;
}
return widened;
Expand Down Expand Up @@ -4992,9 +4990,7 @@ namespace ts {
return result;
}
if (isEmptyArrayLiteralType(type)) {
if (noImplicitAny) {
reportImplicitAnyError(expression, anyArrayType);
}
reportImplicitAny(expression, anyArrayType);
return anyArrayType;
}
return type;
Expand Down Expand Up @@ -5044,8 +5040,8 @@ namespace ts {
if (isBindingPattern(element.name)) {
return getTypeFromBindingPattern(element.name, includePatternInType, reportErrors);
}
if (reportErrors && noImplicitAny && !declarationBelongsToPrivateAmbientMember(element)) {
reportImplicitAnyError(element, anyType);
if (reportErrors && !declarationBelongsToPrivateAmbientMember(element)) {
reportImplicitAny(element, anyType);
}
return anyType;
}
Expand Down Expand Up @@ -5145,9 +5141,9 @@ namespace ts {
type = isParameter(declaration) && declaration.dotDotDotToken ? anyArrayType : anyType;

// Report implicit any errors unless this is a private property within an ambient declaration
if (reportErrors && noImplicitAny) {
if (reportErrors) {
if (!declarationBelongsToPrivateAmbientMember(declaration)) {
reportImplicitAnyError(declaration, type);
reportImplicitAny(declaration, type);
}
}
return type;
Expand Down Expand Up @@ -5328,14 +5324,12 @@ namespace ts {
}
// Otherwise, fall back to 'any'.
else {
if (noImplicitAny) {
if (setter) {
error(setter, Diagnostics.Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_parameter_type_annotation, symbolToString(symbol));
}
else {
Debug.assert(!!getter, "there must existed getter as we are current checking either setter or getter in this function");
error(getter, Diagnostics.Property_0_implicitly_has_type_any_because_its_get_accessor_lacks_a_return_type_annotation, symbolToString(symbol));
}
if (setter) {
errorOrSuggestion(noImplicitAny, setter, Diagnostics.Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_parameter_type_annotation, symbolToString(symbol));
}
else {
Debug.assert(!!getter, "there must existed getter as we are current checking either setter or getter in this function");
errorOrSuggestion(noImplicitAny, getter!, Diagnostics.Property_0_implicitly_has_type_any_because_its_get_accessor_lacks_a_return_type_annotation, symbolToString(symbol));
}
type = anyType;
}
Expand Down Expand Up @@ -13270,8 +13264,12 @@ namespace ts {
return errorReported;
}

function reportImplicitAnyError(declaration: Declaration, type: Type) {
function reportImplicitAny(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) && !isCheckJsEnabledForFile(getSourceFileOfNode(declaration), compilerOptions)) {
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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 All @@ -13294,26 +13292,28 @@ namespace ts {
case SyntaxKind.SetAccessor:
case SyntaxKind.FunctionExpression:
case SyntaxKind.ArrowFunction:
if (!(declaration as NamedDeclaration).name) {
if (noImplicitAny && !(declaration as NamedDeclaration).name) {
error(declaration, Diagnostics.Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type, typeAsString);
return;
}
diagnostic = Diagnostics._0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type;
break;
case SyntaxKind.MappedType:
error(declaration, Diagnostics.Mapped_object_type_implicitly_has_an_any_template_type);
if (noImplicitAny) {
error(declaration, Diagnostics.Mapped_object_type_implicitly_has_an_any_template_type);
}
return;
default:
diagnostic = Diagnostics.Variable_0_implicitly_has_an_1_type;
}
error(declaration, diagnostic, declarationNameToString(getNameOfDeclaration(declaration)), typeAsString);
errorOrSuggestion(noImplicitAny, declaration, diagnostic, declarationNameToString(getNameOfDeclaration(declaration)), typeAsString);
}

function reportErrorsFromWidening(declaration: Declaration, type: Type) {
if (produceDiagnostics && noImplicitAny && type.flags & TypeFlags.ContainsWideningType) {
// Report implicit any error within type if possible, otherwise report error on declaration
if (!reportWideningErrorsInType(type)) {
reportImplicitAnyError(declaration, type);
reportImplicitAny(declaration, type);
}
}
}
Expand Down Expand Up @@ -22314,15 +22314,11 @@ namespace ts {
isTypeAssertion(initializer) ? type : getWidenedLiteralType(type);
if (isInJSFile(declaration)) {
if (widened.flags & TypeFlags.Nullable) {
if (noImplicitAny) {
reportImplicitAnyError(declaration, anyType);
}
reportImplicitAny(declaration, anyType);
return anyType;
}
else if (isEmptyArrayLiteralType(widened)) {
if (noImplicitAny) {
reportImplicitAnyError(declaration, anyArrayType);
}
reportImplicitAny(declaration, anyArrayType);
return anyArrayType;
}
}
Expand Down Expand Up @@ -23313,8 +23309,8 @@ namespace ts {
checkSourceElement(node.typeParameter);
checkSourceElement(node.type);

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

const type = <MappedType>getTypeFromMappedTypeNode(node);
Expand Down Expand Up @@ -24338,8 +24334,8 @@ namespace ts {
if (produceDiagnostics && !getEffectiveReturnTypeNode(node)) {
// 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 (noImplicitAny && nodeIsMissing(body) && !isPrivateWithinAmbient(node)) {
reportImplicitAnyError(node, anyType);
if (nodeIsMissing(body) && !isPrivateWithinAmbient(node)) {
reportImplicitAny(node, anyType);
}

if (functionFlags & FunctionFlags.Generator && nodeIsPresent(body)) {
Expand Down
2 changes: 1 addition & 1 deletion src/testRunner/unittests/tsserverProjectSystem.ts
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Expand Up @@ -4981,7 +4981,7 @@ namespace ts.projectSystem {
checkErrorMessage(session, "suggestionDiag", {
file: file.path,
diagnostics: [
createDiagnostic({ line: 1, offset: 12 }, { line: 1, offset: 13 }, Diagnostics._0_is_declared_but_its_value_is_never_read, ["p"], "suggestion", /*reportsUnnecssary*/ true)
createDiagnostic({ line: 1, offset: 12 }, { line: 1, offset: 13 }, Diagnostics._0_is_declared_but_its_value_is_never_read, ["p"], "suggestion", /*reportsUnnecessary*/ true),
],
});
checkCompleteEvent(session, 2, expectedSequenceId);
Expand Down
7 changes: 3 additions & 4 deletions tests/cases/fourslash/annotateWithTypeFromJSDoc1.ts
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Expand Up @@ -4,10 +4,9 @@
/////** @type {number} */
////var [|x|];

verify.getSuggestionDiagnostics([{
message: "JSDoc types may be moved to TypeScript types.",
code: 80004,
}]);
verify.getSuggestionDiagnostics([
{ message: "JSDoc types may be moved to TypeScript types.", code: 80004 },
{ message: "Variable 'x' implicitly has an 'any' type.", code: 7005 }]);

verify.codeFix({
description: "Annotate with type from JSDoc",
Expand Down
13 changes: 8 additions & 5 deletions tests/cases/fourslash/annotateWithTypeFromJSDoc3.ts
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Expand Up @@ -6,14 +6,17 @@
//// * @param alpha - the other best parameter
//// * @param {*} beta - I have no idea how this got here
//// */
////function [|f|](x, y, z: string, alpha, beta) {
////function [|f|]([|x|], [|y|], z: string, [|alpha|], [|beta|]) {
//// x; y; z; alpha; beta;
////}

verify.getSuggestionDiagnostics([{
message: "JSDoc types may be moved to TypeScript types.",
code: 80004,
}]);
const [r0, r1, r2, r3, r4] = test.ranges();
verify.getSuggestionDiagnostics([
{message: "JSDoc types may be moved to TypeScript types.", code: 80004, range: r0},
{message: "Parameter 'x' implicitly has an 'any' type.", code: 7006, range: r1 },
{message: "Parameter 'y' implicitly has an 'any' type.", code: 7006, range: r2 },
{message: "Parameter 'alpha' implicitly has an 'any' type.", code: 7006, range: r3 },
{message: "Parameter 'beta' implicitly has an 'any' type.", code: 7006, range: r4 }]);

verify.codeFix({
description: "Annotate with type from JSDoc",
Expand Down
5 changes: 5 additions & 0 deletions tests/cases/fourslash/codeFixUnusedIdentifier_suggestion.ts
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Expand Up @@ -6,6 +6,11 @@

const [r0, r1] = test.ranges();
verify.getSuggestionDiagnostics([
{
message: "Parameter 'p' implicitly has an 'any' type.",
range: r0,
code: 7006,
},
{
message: "'p' is declared but its value is never read.",
range: r0,
Expand Down
11 changes: 10 additions & 1 deletion tests/cases/fourslash/noSuggestionDiagnosticsOnParseError.ts
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Expand Up @@ -4,4 +4,13 @@
////export {};
////const a = 1 d;

verify.getSuggestionDiagnostics([]);
// Only give suggestions for nodes that do NOT have parse errors
verify.getSuggestionDiagnostics([{
message: "Variable 'd' implicitly has an 'any' type.",
code: 7005,
range: {
fileName: "/a.ts",
pos: 23,
end: 24,
}
}]);
8 changes: 4 additions & 4 deletions tests/cases/fourslash/refactorConvertToEs6Module_export_named.ts
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Expand Up @@ -12,10 +12,10 @@
////exports.a3 = x => { x; };
////exports.a4 = x => x;

verify.getSuggestionDiagnostics([{
message: "File is a CommonJS module; it may be converted to an ES6 module.",
code: 80001,
}]);
const [r0, r1, r2] = test.ranges();
verify.getSuggestionDiagnostics([
{ message: "File is a CommonJS module; it may be converted to an ES6 module.", code: 80001, range: r0 },
]);

verify.codeFix({
description: "Convert to ES6 module",
Expand Down
2 changes: 1 addition & 1 deletion tests/cases/fourslash/unusedLocalsInFunction2.ts
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Expand Up @@ -6,4 +6,4 @@
//// x+1;
////}

verify.rangeAfterCodeFix("var x;");
verify.rangeAfterCodeFix("var x;", undefined, undefined, 0);