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Modify synthetic default generation code for dual-mode module resolution (#46156)

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Wesley Wigham 2021-10-01 09:18:44 -07:00 committed by GitHub
parent 016d78b09e
commit ccc19092ff
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14 changed files with 236 additions and 81 deletions
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30
src/compiler/checker.ts
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@ -2629,7 +2629,23 @@ namespace ts {
return ((isExportAssignment(node) && !node.isExportEquals) || hasSyntacticModifier(node, ModifierFlags.Default) || isExportSpecifier(node));
}
function canHaveSyntheticDefault(file: SourceFile | undefined, moduleSymbol: Symbol, dontResolveAlias: boolean) {
function getUsageModeForExpression(usage: Expression) {
return isStringLiteralLike(usage) ? getModeForUsageLocation(getSourceFileOfNode(usage), usage) : undefined;
}
function isESMFormatImportImportingCommonjsFormatFile(usageMode: SourceFile["impliedNodeFormat"], targetMode: SourceFile["impliedNodeFormat"]) {
return usageMode === ModuleKind.ESNext && targetMode === ModuleKind.CommonJS;
}
function canHaveSyntheticDefault(file: SourceFile | undefined, moduleSymbol: Symbol, dontResolveAlias: boolean, usage: Expression) {
const usageMode = file && getUsageModeForExpression(usage);
if (file && usageMode !== undefined) {
const result = isESMFormatImportImportingCommonjsFormatFile(usageMode, file.impliedNodeFormat);
if (usageMode === ModuleKind.ESNext || result) {
return result;
}
// fallthrough on cjs usages so we imply defaults for interop'd imports, too
}
if (!allowSyntheticDefaultImports) {
return false;
}
@ -2672,7 +2688,7 @@ namespace ts {
}
const file = moduleSymbol.declarations?.find(isSourceFile);
const hasSyntheticDefault = canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias);
const hasSyntheticDefault = canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias, node.parent.moduleSpecifier);
if (!exportDefaultSymbol && !hasSyntheticDefault) {
if (hasExportAssignmentSymbol(moduleSymbol)) {
const compilerOptionName = moduleKind >= ModuleKind.ES2015 ? "allowSyntheticDefaultImports" : "esModuleInterop";
@ -2824,7 +2840,7 @@ namespace ts {
let symbolFromModule = getExportOfModule(targetSymbol, name, specifier, dontResolveAlias);
if (symbolFromModule === undefined && name.escapedText === InternalSymbolName.Default) {
const file = moduleSymbol.declarations?.find(isSourceFile);
if (canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias)) {
if (canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias, moduleSpecifier)) {
symbolFromModule = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) || resolveSymbol(moduleSymbol, dontResolveAlias);
}
}
@ -3587,7 +3603,7 @@ namespace ts {
sigs = getSignaturesOfStructuredType(type, SignatureKind.Construct);
}
if (sigs && sigs.length) {
const moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol!);
const moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol!, isImportCall(referenceParent) ? referenceParent.arguments[0] : referenceParent.moduleSpecifier);
// Create a new symbol which has the module's type less the call and construct signatures
const result = createSymbol(symbol.flags, symbol.escapedName);
result.declarations = symbol.declarations ? symbol.declarations.slice() : [];
@ -30945,18 +30961,18 @@ namespace ts {
if (moduleSymbol) {
const esModuleSymbol = resolveESModuleSymbol(moduleSymbol, specifier, /*dontRecursivelyResolve*/ true, /*suppressUsageError*/ false);
if (esModuleSymbol) {
return createPromiseReturnType(node, getTypeWithSyntheticDefaultImportType(getTypeOfSymbol(esModuleSymbol), esModuleSymbol, moduleSymbol));
return createPromiseReturnType(node, getTypeWithSyntheticDefaultImportType(getTypeOfSymbol(esModuleSymbol), esModuleSymbol, moduleSymbol, specifier));
}
}
return createPromiseReturnType(node, anyType);
}
function getTypeWithSyntheticDefaultImportType(type: Type, symbol: Symbol, originalSymbol: Symbol): Type {
function getTypeWithSyntheticDefaultImportType(type: Type, symbol: Symbol, originalSymbol: Symbol, moduleSpecifier: Expression): Type {
if (allowSyntheticDefaultImports && type && !isErrorType(type)) {
const synthType = type as SyntheticDefaultModuleType;
if (!synthType.syntheticType) {
const file = originalSymbol.declarations?.find(isSourceFile);
const hasSyntheticDefault = canHaveSyntheticDefault(file, originalSymbol, /*dontResolveAlias*/ false);
const hasSyntheticDefault = canHaveSyntheticDefault(file, originalSymbol, /*dontResolveAlias*/ false, moduleSpecifier);
if (hasSyntheticDefault) {
const memberTable = createSymbolTable();
const newSymbol = createSymbol(SymbolFlags.Alias, InternalSymbolName.Default);

12
tests/baselines/reference/nodeModulesAllowJsSynchronousCallErrors(module=node12).types
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@ -23,9 +23,9 @@ export async function f() {
>"../index.js" : "../index.js"
const mod4 = await import ("./index.js");
>mod4 : typeof mod2
>await import ("./index.js") : typeof mod2
>import ("./index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./index.js" : "./index.js"
h();
@ -57,9 +57,9 @@ export async function h() {
>"./index.js" : "./index.js"
const mod4 = await import ("./subfolder/index.js");
>mod4 : typeof mod2
>await import ("./subfolder/index.js") : typeof mod2
>import ("./subfolder/index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./subfolder/index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./subfolder/index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./subfolder/index.js" : "./subfolder/index.js"
f();

12
tests/baselines/reference/nodeModulesAllowJsSynchronousCallErrors(module=nodenext).types
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@ -23,9 +23,9 @@ export async function f() {
>"../index.js" : "../index.js"
const mod4 = await import ("./index.js");
>mod4 : typeof mod2
>await import ("./index.js") : typeof mod2
>import ("./index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./index.js" : "./index.js"
h();
@ -57,9 +57,9 @@ export async function h() {
>"./index.js" : "./index.js"
const mod4 = await import ("./subfolder/index.js");
>mod4 : typeof mod2
>await import ("./subfolder/index.js") : typeof mod2
>import ("./subfolder/index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./subfolder/index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./subfolder/index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./subfolder/index.js" : "./subfolder/index.js"
f();

36
tests/baselines/reference/nodeModulesCjsFormatFileAlwaysHasDefault(module=node12).js Normal file
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@ -0,0 +1,36 @@
//// [tests/cases/conformance/node/nodeModulesCjsFormatFileAlwaysHasDefault.ts] ////
//// [index.ts]
// cjs format file
export const a = 1;
//// [index.ts]
// esm format file
import mod from "./subfolder/index.js";
mod;
//// [package.json]
{
"name": "package",
"private": true,
"type": "module"
}
//// [package.json]
{
"type": "commonjs"
}
//// [index.js]
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.a = void 0;
// cjs format file
exports.a = 1;
//// [index.js]
// esm format file
import mod from "./subfolder/index.js";
mod;
//// [index.d.ts]
export declare const a = 1;
//// [index.d.ts]
export {};

13
tests/baselines/reference/nodeModulesCjsFormatFileAlwaysHasDefault(module=node12).symbols Normal file
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@ -0,0 +1,13 @@
=== tests/cases/conformance/node/subfolder/index.ts ===
// cjs format file
export const a = 1;
>a : Symbol(a, Decl(index.ts, 1, 12))
=== tests/cases/conformance/node/index.ts ===
// esm format file
import mod from "./subfolder/index.js";
>mod : Symbol(mod, Decl(index.ts, 1, 6))
mod;
>mod : Symbol(mod, Decl(index.ts, 1, 6))

14
tests/baselines/reference/nodeModulesCjsFormatFileAlwaysHasDefault(module=node12).types Normal file
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@ -0,0 +1,14 @@
=== tests/cases/conformance/node/subfolder/index.ts ===
// cjs format file
export const a = 1;
>a : 1
>1 : 1
=== tests/cases/conformance/node/index.ts ===
// esm format file
import mod from "./subfolder/index.js";
>mod : typeof mod
mod;
>mod : typeof mod

36
tests/baselines/reference/nodeModulesCjsFormatFileAlwaysHasDefault(module=nodenext).js Normal file
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@ -0,0 +1,36 @@
//// [tests/cases/conformance/node/nodeModulesCjsFormatFileAlwaysHasDefault.ts] ////
//// [index.ts]
// cjs format file
export const a = 1;
//// [index.ts]
// esm format file
import mod from "./subfolder/index.js";
mod;
//// [package.json]
{
"name": "package",
"private": true,
"type": "module"
}
//// [package.json]
{
"type": "commonjs"
}
//// [index.js]
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.a = void 0;
// cjs format file
exports.a = 1;
//// [index.js]
// esm format file
import mod from "./subfolder/index.js";
mod;
//// [index.d.ts]
export declare const a = 1;
//// [index.d.ts]
export {};

13
tests/baselines/reference/nodeModulesCjsFormatFileAlwaysHasDefault(module=nodenext).symbols Normal file
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@ -0,0 +1,13 @@
=== tests/cases/conformance/node/subfolder/index.ts ===
// cjs format file
export const a = 1;
>a : Symbol(a, Decl(index.ts, 1, 12))
=== tests/cases/conformance/node/index.ts ===
// esm format file
import mod from "./subfolder/index.js";
>mod : Symbol(mod, Decl(index.ts, 1, 6))
mod;
>mod : Symbol(mod, Decl(index.ts, 1, 6))

14
tests/baselines/reference/nodeModulesCjsFormatFileAlwaysHasDefault(module=nodenext).types Normal file
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@ -0,0 +1,14 @@
=== tests/cases/conformance/node/subfolder/index.ts ===
// cjs format file
export const a = 1;
>a : 1
>1 : 1
=== tests/cases/conformance/node/index.ts ===
// esm format file
import mod from "./subfolder/index.js";
>mod : typeof mod
mod;
>mod : typeof mod

62
tests/baselines/reference/nodeModulesDeclarationEmitDynamicImportWithPackageExports.js
View File

@ -122,7 +122,9 @@ export {};
//// [index.d.cts]
export {};
//// [other.d.ts]
export declare const a: typeof import("package/cjs");
export declare const a: {
default: typeof import("package/cjs");
};
export declare const b: typeof import("package/mjs");
export declare const c: typeof import("package");
export declare const f: {
@ -134,12 +136,11 @@ export declare const d: {
default: typeof import("inner/cjs");
cjsNonmain: true;
};
export declare const e: {
default: typeof import("inner/mjs");
esm: true;
};
export declare const e: typeof import("inner/mjs");
//// [other.d.mts]
export declare const a: typeof import("package/cjs");
export declare const a: {
default: typeof import("package/cjs");
};
export declare const b: typeof import("package/mjs");
export declare const c: typeof import("package");
export declare const f: {
@ -151,12 +152,11 @@ export declare const d: {
default: typeof import("inner/cjs");
cjsNonmain: true;
};
export declare const e: {
default: typeof import("inner/mjs");
esm: true;
};
export declare const e: typeof import("inner/mjs");
//// [other.d.cts]
export declare const a: Promise<typeof import("package/cjs")>;
export declare const a: Promise<{
default: typeof import("package/cjs");
}>;
export declare const b: Promise<typeof import("package/mjs")>;
export declare const c: Promise<typeof import("package")>;
export declare const f: Promise<{
@ -168,18 +168,15 @@ export declare const d: Promise<{
default: typeof import("inner/cjs");
cjsNonmain: true;
}>;
export declare const e: Promise<{
default: typeof import("inner/mjs");
esm: true;
}>;
export declare const e: Promise<typeof import("inner/mjs")>;
//// [DtsFileErrors]
tests/cases/conformance/node/other.d.cts(2,47): error TS1471: Module 'package/mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
tests/cases/conformance/node/other.d.cts(3,47): error TS1471: Module 'package' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
tests/cases/conformance/node/other2.d.cts(6,28): error TS1471: Module 'inner/mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
tests/cases/conformance/node/other.d.cts(4,47): error TS1471: Module 'package/mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
tests/cases/conformance/node/other.d.cts(5,47): error TS1471: Module 'package' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
tests/cases/conformance/node/other2.d.cts(5,47): error TS1471: Module 'inner/mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
==== tests/cases/conformance/node/index.d.ts (0 errors) ====
@ -192,7 +189,9 @@ tests/cases/conformance/node/other2.d.cts(6,28): error TS1471: Module 'inner/mjs
export {};
==== tests/cases/conformance/node/other.d.ts (0 errors) ====
export declare const a: typeof import("package/cjs");
export declare const a: {
default: typeof import("package/cjs");
};
export declare const b: typeof import("package/mjs");
export declare const c: typeof import("package");
export declare const f: {
@ -205,13 +204,12 @@ tests/cases/conformance/node/other2.d.cts(6,28): error TS1471: Module 'inner/mjs
default: typeof import("inner/cjs");
cjsNonmain: true;
};
export declare const e: {
default: typeof import("inner/mjs");
esm: true;
};
export declare const e: typeof import("inner/mjs");
==== tests/cases/conformance/node/other.d.mts (0 errors) ====
export declare const a: typeof import("package/cjs");
export declare const a: {
default: typeof import("package/cjs");
};
export declare const b: typeof import("package/mjs");
export declare const c: typeof import("package");
export declare const f: {
@ -224,13 +222,12 @@ tests/cases/conformance/node/other2.d.cts(6,28): error TS1471: Module 'inner/mjs
default: typeof import("inner/cjs");
cjsNonmain: true;
};
export declare const e: {
default: typeof import("inner/mjs");
esm: true;
};
export declare const e: typeof import("inner/mjs");
==== tests/cases/conformance/node/other.d.cts (2 errors) ====
export declare const a: Promise<typeof import("package/cjs")>;
export declare const a: Promise<{
default: typeof import("package/cjs");
}>;
export declare const b: Promise<typeof import("package/mjs")>;
~~~~~~~~~~~~~
!!! error TS1471: Module 'package/mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
@ -247,12 +244,9 @@ tests/cases/conformance/node/other2.d.cts(6,28): error TS1471: Module 'inner/mjs
default: typeof import("inner/cjs");
cjsNonmain: true;
}>;
export declare const e: Promise<{
default: typeof import("inner/mjs");
~~~~~~~~~~~
export declare const e: Promise<typeof import("inner/mjs")>;
~~~~~~~~~~~
!!! error TS1471: Module 'inner/mjs' cannot be imported using this construct. The specifier only resolves to an ES module, which cannot be imported synchronously. Use dynamic import instead.
esm: true;
}>;
==== tests/cases/conformance/node/node_modules/inner/index.d.ts (0 errors) ====
// cjs format file

32
tests/baselines/reference/nodeModulesDeclarationEmitDynamicImportWithPackageExports.types
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@ -10,9 +10,9 @@ No type information for this code.export {};
No type information for this code.=== tests/cases/conformance/node/other.ts ===
// esm format file
export const a = await import("package/cjs");
>a : typeof import("tests/cases/conformance/node/index")
>await import("package/cjs") : typeof import("tests/cases/conformance/node/index")
>import("package/cjs") : Promise<typeof import("tests/cases/conformance/node/index")>
>a : { default: typeof import("tests/cases/conformance/node/index"); }
>await import("package/cjs") : { default: typeof import("tests/cases/conformance/node/index"); }
>import("package/cjs") : Promise<{ default: typeof import("tests/cases/conformance/node/index"); }>
>"package/cjs" : "package/cjs"
export const b = await import("package/mjs");
@ -42,17 +42,17 @@ export const d = await import("inner/cjs");
>"inner/cjs" : "inner/cjs"
export const e = await import("inner/mjs");
>e : { default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }
>await import("inner/mjs") : { default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }
>import("inner/mjs") : Promise<{ default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }>
>e : typeof import("tests/cases/conformance/node/node_modules/inner/index")
>await import("inner/mjs") : typeof import("tests/cases/conformance/node/node_modules/inner/index")
>import("inner/mjs") : Promise<typeof import("tests/cases/conformance/node/node_modules/inner/index")>
>"inner/mjs" : "inner/mjs"
=== tests/cases/conformance/node/other.mts ===
// esm format file
export const a = await import("package/cjs");
>a : typeof import("tests/cases/conformance/node/index")
>await import("package/cjs") : typeof import("tests/cases/conformance/node/index")
>import("package/cjs") : Promise<typeof import("tests/cases/conformance/node/index")>
>a : { default: typeof import("tests/cases/conformance/node/index"); }
>await import("package/cjs") : { default: typeof import("tests/cases/conformance/node/index"); }
>import("package/cjs") : Promise<{ default: typeof import("tests/cases/conformance/node/index"); }>
>"package/cjs" : "package/cjs"
export const b = await import("package/mjs");
@ -82,16 +82,16 @@ export const d = await import("inner/cjs");
>"inner/cjs" : "inner/cjs"
export const e = await import("inner/mjs");
>e : { default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }
>await import("inner/mjs") : { default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }
>import("inner/mjs") : Promise<{ default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }>
>e : typeof import("tests/cases/conformance/node/node_modules/inner/index")
>await import("inner/mjs") : typeof import("tests/cases/conformance/node/node_modules/inner/index")
>import("inner/mjs") : Promise<typeof import("tests/cases/conformance/node/node_modules/inner/index")>
>"inner/mjs" : "inner/mjs"
=== tests/cases/conformance/node/other.cts ===
// cjs format file, no TLA
export const a = import("package/cjs");
>a : Promise<typeof import("tests/cases/conformance/node/index")>
>import("package/cjs") : Promise<typeof import("tests/cases/conformance/node/index")>
>a : Promise<{ default: typeof import("tests/cases/conformance/node/index"); }>
>import("package/cjs") : Promise<{ default: typeof import("tests/cases/conformance/node/index"); }>
>"package/cjs" : "package/cjs"
export const b = import("package/mjs");
@ -117,8 +117,8 @@ export const d = import("inner/cjs");
>"inner/cjs" : "inner/cjs"
export const e = import("inner/mjs");
>e : Promise<{ default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }>
>import("inner/mjs") : Promise<{ default: typeof import("tests/cases/conformance/node/node_modules/inner/index"); esm: true; }>
>e : Promise<typeof import("tests/cases/conformance/node/node_modules/inner/index")>
>import("inner/mjs") : Promise<typeof import("tests/cases/conformance/node/node_modules/inner/index")>
>"inner/mjs" : "inner/mjs"
=== tests/cases/conformance/node/node_modules/inner/index.d.ts ===

12
tests/baselines/reference/nodeModulesSynchronousCallErrors(module=node12).types
View File

@ -23,9 +23,9 @@ export async function f() {
>"../index.js" : "../index.js"
const mod4 = await import ("./index.js");
>mod4 : typeof mod2
>await import ("./index.js") : typeof mod2
>import ("./index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./index.js" : "./index.js"
h();
@ -57,9 +57,9 @@ export async function h() {
>"./index.js" : "./index.js"
const mod4 = await import ("./subfolder/index.js");
>mod4 : typeof mod2
>await import ("./subfolder/index.js") : typeof mod2
>import ("./subfolder/index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./subfolder/index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./subfolder/index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./subfolder/index.js" : "./subfolder/index.js"
f();

12
tests/baselines/reference/nodeModulesSynchronousCallErrors(module=nodenext).types
View File

@ -23,9 +23,9 @@ export async function f() {
>"../index.js" : "../index.js"
const mod4 = await import ("./index.js");
>mod4 : typeof mod2
>await import ("./index.js") : typeof mod2
>import ("./index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./index.js" : "./index.js"
h();
@ -57,9 +57,9 @@ export async function h() {
>"./index.js" : "./index.js"
const mod4 = await import ("./subfolder/index.js");
>mod4 : typeof mod2
>await import ("./subfolder/index.js") : typeof mod2
>import ("./subfolder/index.js") : Promise<typeof mod2>
>mod4 : { default: typeof mod2; f(): Promise<void>; }
>await import ("./subfolder/index.js") : { default: typeof mod2; f(): Promise<void>; }
>import ("./subfolder/index.js") : Promise<{ default: typeof mod2; f(): Promise<void>; }>
>"./subfolder/index.js" : "./subfolder/index.js"
f();

19
tests/cases/conformance/node/nodeModulesCjsFormatFileAlwaysHasDefault.ts Normal file
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@ -0,0 +1,19 @@
// @module: node12,nodenext
// @declaration: true
// @filename: subfolder/index.ts
// cjs format file
export const a = 1;
// @filename: index.ts
// esm format file
import mod from "./subfolder/index.js";
mod;
// @filename: package.json
{
"name": "package",
"private": true,
"type": "module"
}
// @filename: subfolder/package.json
{
"type": "commonjs"
}