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Cleanup emit helper checks

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This commit is contained in:
Ron Buckton
2016-12-31 18:12:26 -08:00
parent 5e0160bc95
commit 2e62d5eef8
5 changed files with 43 additions and 52 deletions
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8
src/compiler/checker.ts
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@@ -21059,7 +21059,7 @@ namespace ts {
function checkExternalEmitHelpers(location: Node, helpers: ExternalEmitHelpers) {
if ((requestedExternalEmitHelpers & helpers) !== helpers && compilerOptions.importHelpers) {
const sourceFile = getSourceFileOfNode(location);
if (isEffectiveExternalModule(sourceFile, compilerOptions)) {
if (!isDeclarationFile(sourceFile) && isEffectiveExternalModule(sourceFile, compilerOptions)) {
const helpersModule = resolveHelpersModule(sourceFile, location);
if (helpersModule !== unknownSymbol) {
const uncheckedHelpers = helpers & ~requestedExternalEmitHelpers;
@@ -21089,10 +21089,12 @@ namespace ts {
case ExternalEmitHelpers.Awaiter: return "__awaiter";
case ExternalEmitHelpers.Generator: return "__generator";
case ExternalEmitHelpers.Values: return "__values";
case ExternalEmitHelpers.Step: return "__step";
case ExternalEmitHelpers.Close: return "__close";
case ExternalEmitHelpers.Read: return "__read";
case ExternalEmitHelpers.Spread: return "__spread";
case ExternalEmitHelpers.AsyncGenerator: return "__asyncGenerator";
case ExternalEmitHelpers.AsyncDelegator: return "__asyncDelegator";
case ExternalEmitHelpers.AsyncValues: return "__asyncValues";
default: Debug.fail("Unrecognized helper.");
}
}

46
src/compiler/transformers/esnext.ts
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@@ -858,7 +858,8 @@ namespace ts {
function fulfill(value) { resume("next", value); }
function reject(value) { resume("throw", value); }
function settle(f, v) { c = void 0, f(v), next(); }
};`
};
`
};
function createAsyncGeneratorHelper(context: TransformationContext, generatorFunc: FunctionExpression) {
@@ -878,28 +879,6 @@ namespace ts {
);
}
const asyncValues: EmitHelper = {
name: "typescript:asyncValues",
scoped: false,
text: `
var __asyncValues = (this && this.__asyncIterator) || function (o) {
var m = o[Symbol.asyncIterator];
if (m) return m.call(o);
return typeof __values === "function" ? __values(o) : o[Symbol.iterator]();
};
`
};
function createAsyncValuesHelper(context: TransformationContext, expression: Expression, location?: TextRange) {
context.requestEmitHelper(asyncValues);
return createCall(
getHelperName("__asyncValues"),
/*typeArguments*/ undefined,
[expression],
location
);
}
const asyncDelegator: EmitHelper = {
name: "typescript:asyncDelegator",
scoped: false,
@@ -921,4 +900,25 @@ namespace ts {
location
);
}
const asyncValues: EmitHelper = {
name: "typescript:asyncValues",
scoped: false,
text: `
var __asyncValues = (this && this.__asyncIterator) || function (o) {
var m = o[Symbol.asyncIterator];
return m ? m.call(o) : typeof __values === "function" ? __values(o) : o[Symbol.iterator]();
};
`
};
function createAsyncValuesHelper(context: TransformationContext, expression: Expression, location?: TextRange) {
context.requestEmitHelper(asyncValues);
return createCall(
getHelperName("__asyncValues"),
/*typeArguments*/ undefined,
[expression],
location
);
}
}

17
src/compiler/types.ts
View File

@@ -3744,20 +3744,17 @@ namespace ts {
Awaiter = 1 << 6, // __awaiter (used by ES2017 async functions transformation)
Generator = 1 << 7, // __generator (used by ES2015 generator transformation)
Values = 1 << 8, // __values (used by ES2015 for..of and yield* transformations)
Step = 1 << 9, // __step (used by ES2015 for..of transformation)
Close = 1 << 10, // __close (used by ES2015 for..of transformation)
Read = 1 << 11, // __read (used by ES2015 iterator destructuring transformation)
Spread = 1 << 12, // __spread (used by ES2015 array spread and argument list spread transformations)
AsyncGenerator = 1 << 13, // __asyncGenerator (used by ES2017 async generator transformation)
AsyncValues = 1 << 14, // __asyncValues (used by ES2017 for..await..of transformation)
AsyncStep = 1 << 15, // __asyncStep (used by ES2017 for..await..of transformation)
AsyncDelegator = 1 << 16, // __asyncDelegator (used by ES2017 async generator yield* transformation)
Read = 1 << 9, // __read (used by ES2015 iterator destructuring transformation)
Spread = 1 << 10, // __spread (used by ES2015 array spread and argument list spread transformations)
AsyncGenerator = 1 << 11, // __asyncGenerator (used by ES2017 async generator transformation)
AsyncDelegator = 1 << 12, // __asyncDelegator (used by ES2017 async generator yield* transformation)
AsyncValues = 1 << 13, // __asyncValues (used by ES2017 for..await..of transformation)
// Helpers included by ES2015 for..of
ForOfIncludes = Values | Step | Close,
ForOfIncludes = Values,
// Helpers included by ES2017 for..await..of
ForAwaitOfIncludes = AsyncValues | AsyncStep | Close,
ForAwaitOfIncludes = AsyncValues,
// Helpers included by ES2015 spread
SpreadIncludes = Read | Spread,