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Handle .mts and .cts files in @babel/preset-typescript (#13838)

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This commit is contained in:
Nicolò Ribaudo 2021-10-29 01:13:37 +02:00 committed by GitHub
parent 381277ae35
commit 718c6cb7de
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GPG Key ID: 4AEE18F83AFDEB23
56 changed files with 619 additions and 38 deletions
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4
packages/babel-helper-fixtures/src/index.ts
View File

@ -64,7 +64,7 @@ function shouldIgnore(name, ignore?: Array<string>) {
);
}
const EXTENSIONS = [".js", ".mjs", ".ts", ".tsx"];
const EXTENSIONS = [".js", ".mjs", ".ts", ".tsx", ".cts", ".mts"];
function findFile(filepath: string, allowJSON?: boolean) {
const matches = [];
@ -134,6 +134,7 @@ function pushTask(taskName, taskDir, suite, suiteName) {
? taskOpts.BABEL_8_BREAKING === false
: taskOpts.BABEL_8_BREAKING === true),
options: taskOpts,
doNotSetSourceType: taskOpts.DO_NOT_SET_SOURCE_TYPE,
externalHelpers:
taskOpts.externalHelpers ??
!!tryResolve("@babel/plugin-external-helpers"),
@ -162,6 +163,7 @@ function pushTask(taskName, taskDir, suite, suiteName) {
};
delete taskOpts.BABEL_8_BREAKING;
delete taskOpts.DO_NOT_SET_SOURCE_TYPE;
// If there's node requirement, check it before pushing task
if (taskOpts.minNodeVersion) {

3
packages/babel-helper-transform-fixture-test-runner/src/index.ts
View File

@ -230,6 +230,7 @@ function run(task) {
expect: expected,
exec,
options: opts,
doNotSetSourceType,
optionsDir,
validateLogs,
ignoreOutput,
@ -245,7 +246,7 @@ function run(task) {
filename: self.loc,
filenameRelative: self.filename,
sourceFileName: self.filename,
sourceType: "script",
...(doNotSetSourceType ? {} : { sourceType: "script" }),
babelrc: false,
configFile: false,
inputSourceMap: task.inputSourceMap || undefined,

52
packages/babel-parser/src/plugins/typescript/index.js
View File

@ -135,6 +135,10 @@ const TSErrors = makeErrorTemplates(
"Private elements cannot have an accessibility modifier ('%0').",
ReadonlyForMethodSignature:
"'readonly' modifier can only appear on a property declaration or index signature.",
ReservedArrowTypeParam:
"This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`.",
ReservedTypeAssertion:
"This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead.",
SetAccesorCannotHaveOptionalParameter:
"A 'set' accessor cannot have an optional parameter.",
SetAccesorCannotHaveRestParameter:
@ -359,12 +363,14 @@ export default (superClass: Class<Parser>): Class<Parser> =>
tsParseDelimitedList<T: N.Node>(
kind: ParsingContext,
parseElement: () => T,
refTrailingCommaPos?: { value: number },
): T[] {
return nonNull(
this.tsParseDelimitedListWorker(
kind,
parseElement,
/* expectSuccess */ true,
refTrailingCommaPos,
),
);
}
@ -377,13 +383,16 @@ export default (superClass: Class<Parser>): Class<Parser> =>
kind: ParsingContext,
parseElement: () => ?T,
expectSuccess: boolean,
refTrailingCommaPos?: { value: number },
): ?(T[]) {
const result = [];
let trailingCommaPos = -1;
for (;;) {
if (this.tsIsListTerminator(kind)) {
break;
}
trailingCommaPos = -1;
const element = parseElement();
if (element == null) {
@ -392,6 +401,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
result.push(element);
if (this.eat(tt.comma)) {
trailingCommaPos = this.state.lastTokStart;
continue;
}
@ -406,6 +416,10 @@ export default (superClass: Class<Parser>): Class<Parser> =>
return undefined;
}
if (refTrailingCommaPos) {
refTrailingCommaPos.value = trailingCommaPos;
}
return result;
}
@ -414,6 +428,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
parseElement: () => T,
bracket: boolean,
skipFirstToken: boolean,
refTrailingCommaPos?: { value: number },
): T[] {
if (!skipFirstToken) {
if (bracket) {
@ -423,7 +438,11 @@ export default (superClass: Class<Parser>): Class<Parser> =>
}
}
const result = this.tsParseDelimitedList(kind, parseElement);
const result = this.tsParseDelimitedList(
kind,
parseElement,
refTrailingCommaPos,
);
if (bracket) {
this.expect(tt.bracketR);
@ -524,15 +543,21 @@ export default (superClass: Class<Parser>): Class<Parser> =>
this.unexpected();
}
const refTrailingCommaPos = { value: -1 };
node.params = this.tsParseBracketedList(
"TypeParametersOrArguments",
this.tsParseTypeParameter.bind(this),
/* bracket */ false,
/* skipFirstToken */ true,
refTrailingCommaPos,
);
if (node.params.length === 0) {
this.raise(node.start, TSErrors.EmptyTypeParameters);
}
if (refTrailingCommaPos.value !== -1) {
this.addExtra(node, "trailingComma", refTrailingCommaPos.value);
}
return this.finishNode(node, "TSTypeParameterDeclaration");
}
@ -1403,6 +1428,10 @@ export default (superClass: Class<Parser>): Class<Parser> =>
}
tsParseTypeAssertion(): N.TsTypeAssertion {
if (this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) {
this.raise(this.state.start, TSErrors.ReservedTypeAssertion);
}
const node: N.TsTypeAssertion = this.startNode();
const _const = this.tsTryNextParseConstantContext();
node.typeAnnotation = _const || this.tsNextThenParseType();
@ -2854,7 +2883,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
// Either way, we're looking at a '<': tt.jsxTagStart or relational.
let typeParameters: N.TsTypeParameterDeclaration;
let typeParameters: ?N.TsTypeParameterDeclaration;
state = state || this.state.clone();
const arrow = this.tryParse(abort => {
@ -2878,7 +2907,13 @@ export default (superClass: Class<Parser>): Class<Parser> =>
}, state);
/*:: invariant(arrow.node != null) */
if (!arrow.error && !arrow.aborted) return arrow.node;
if (!arrow.error && !arrow.aborted) {
// This error is reported outside of the this.tryParse call so that
// in case of <T>(x) => 2, we don't consider <T>(x) as a type assertion
// because of this error.
if (typeParameters) this.reportReservedArrowTypeParam(typeParameters);
return arrow.node;
}
if (!jsx) {
// Try parsing a type cast instead of an arrow function.
@ -2903,6 +2938,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
if (arrow.node) {
/*:: invariant(arrow.failState) */
this.state = arrow.failState;
if (typeParameters) this.reportReservedArrowTypeParam(typeParameters);
return arrow.node;
}
@ -2919,6 +2955,16 @@ export default (superClass: Class<Parser>): Class<Parser> =>
throw jsx?.error || arrow.error || typeCast?.error;
}
reportReservedArrowTypeParam(node: any) {
if (
node.params.length === 1 &&
!node.extra?.trailingComma &&
this.getPluginOption("typescript", "disallowAmbiguousJSXLike")
) {
this.raise(node.start, TSErrors.ReservedArrowTypeParam);
}
}
// Handle type assertions
parseMaybeUnary(refExpressionErrors?: ?ExpressionErrors): N.Expression {
if (!this.hasPlugin("jsx") && this.isRelational("<")) {

3
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": [["typescript", { "disallowAmbiguousJSXLike": true }]]
}

1
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-assertion/input.ts vendored Normal file
View File

@ -0,0 +1 @@
<T>x;

38
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-assertion/output.json vendored Normal file
View File

@ -0,0 +1,38 @@
{
"type": "File",
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}},
"errors": [
"SyntaxError: This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead. (1:0)"
],
"program": {
"type": "Program",
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}},
"expression": {
"type": "TSTypeAssertion",
"start":0,"end":4,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":4}},
"typeAnnotation": {
"type": "TSTypeReference",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2}},
"typeName": {
"type": "Identifier",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2},"identifierName":"T"},
"name": "T"
}
},
"expression": {
"type": "Identifier",
"start":3,"end":4,"loc":{"start":{"line":1,"column":3},"end":{"line":1,"column":4},"identifierName":"x"},
"name": "x"
}
}
}
],
"directives": []
}
}

2
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-babel-7/input.ts vendored Normal file
View File

@ -0,0 +1,2 @@
<T>() => 1;
<T>(x) => 1;

3
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-babel-7/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"BABEL_8_BREAKING": false
}

87
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-babel-7/output.json vendored Normal file
View File

@ -0,0 +1,87 @@
{
"type": "File",
"start":0,"end":24,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":12}},
"errors": [
"SyntaxError: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (1:0)",
"SyntaxError: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (2:0)"
],
"program": {
"type": "Program",
"start":0,"end":24,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":12}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start":0,"end":11,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":11}},
"expression": {
"type": "ArrowFunctionExpression",
"start":0,"end":10,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":10}},
"id": null,
"generator": false,
"async": false,
"params": [],
"body": {
"type": "NumericLiteral",
"start":9,"end":10,"loc":{"start":{"line":1,"column":9},"end":{"line":1,"column":10}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":0,"end":3,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":3}},
"params": [
{
"type": "TSTypeParameter",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2}},
"name": "T"
}
]
}
}
},
{
"type": "ExpressionStatement",
"start":12,"end":24,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":12}},
"expression": {
"type": "ArrowFunctionExpression",
"start":12,"end":23,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":11}},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start":16,"end":17,"loc":{"start":{"line":2,"column":4},"end":{"line":2,"column":5},"identifierName":"x"},
"name": "x"
}
],
"body": {
"type": "NumericLiteral",
"start":22,"end":23,"loc":{"start":{"line":2,"column":10},"end":{"line":2,"column":11}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":12,"end":15,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":3}},
"params": [
{
"type": "TSTypeParameter",
"start":13,"end":14,"loc":{"start":{"line":2,"column":1},"end":{"line":2,"column":2}},
"name": "T"
}
]
}
}
}
],
"directives": []
}
}

2
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-unambiguous-babel-7/input.ts vendored Normal file
View File

@ -0,0 +1,2 @@
<T,>() => 1;
<T,>(x) => 1;

3
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-unambiguous-babel-7/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"BABEL_8_BREAKING": false
}

89
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-unambiguous-babel-7/output.json vendored Normal file
View File

@ -0,0 +1,89 @@
{
"type": "File",
"start":0,"end":26,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":13}},
"program": {
"type": "Program",
"start":0,"end":26,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":13}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start":0,"end":12,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":12}},
"expression": {
"type": "ArrowFunctionExpression",
"start":0,"end":11,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":11}},
"id": null,
"generator": false,
"async": false,
"params": [],
"body": {
"type": "NumericLiteral",
"start":10,"end":11,"loc":{"start":{"line":1,"column":10},"end":{"line":1,"column":11}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":0,"end":4,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":4}},
"params": [
{
"type": "TSTypeParameter",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2}},
"name": "T"
}
],
"extra": {
"trailingComma": 2
}
}
}
},
{
"type": "ExpressionStatement",
"start":13,"end":26,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":13}},
"expression": {
"type": "ArrowFunctionExpression",
"start":13,"end":25,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":12}},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start":18,"end":19,"loc":{"start":{"line":2,"column":5},"end":{"line":2,"column":6},"identifierName":"x"},
"name": "x"
}
],
"body": {
"type": "NumericLiteral",
"start":24,"end":25,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":12}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":13,"end":17,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":4}},
"params": [
{
"type": "TSTypeParameter",
"start":14,"end":15,"loc":{"start":{"line":2,"column":1},"end":{"line":2,"column":2}},
"name": "T"
}
],
"extra": {
"trailingComma": 15
}
}
}
}
],
"directives": []
}
}

2
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-unambiguous/input.ts vendored Normal file
View File

@ -0,0 +1,2 @@
<T,>() => 1;
<T,>(x) => 1;

3
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-unambiguous/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"BABEL_8_BREAKING": true
}

97
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter-unambiguous/output.json vendored Normal file
View File

@ -0,0 +1,97 @@
{
"type": "File",
"start":0,"end":26,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":13}},
"program": {
"type": "Program",
"start":0,"end":26,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":13}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start":0,"end":12,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":12}},
"expression": {
"type": "ArrowFunctionExpression",
"start":0,"end":11,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":11}},
"id": null,
"generator": false,
"async": false,
"params": [],
"body": {
"type": "NumericLiteral",
"start":10,"end":11,"loc":{"start":{"line":1,"column":10},"end":{"line":1,"column":11}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":0,"end":4,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":4}},
"params": [
{
"type": "TSTypeParameter",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2}},
"name": {
"type": "Identifier",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2},"identifierName":"T"},
"name": "T"
}
}
],
"extra": {
"trailingComma": 2
}
}
}
},
{
"type": "ExpressionStatement",
"start":13,"end":26,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":13}},
"expression": {
"type": "ArrowFunctionExpression",
"start":13,"end":25,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":12}},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start":18,"end":19,"loc":{"start":{"line":2,"column":5},"end":{"line":2,"column":6},"identifierName":"x"},
"name": "x"
}
],
"body": {
"type": "NumericLiteral",
"start":24,"end":25,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":12}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":13,"end":17,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":4}},
"params": [
{
"type": "TSTypeParameter",
"start":14,"end":15,"loc":{"start":{"line":2,"column":1},"end":{"line":2,"column":2}},
"name": {
"type": "Identifier",
"start":14,"end":15,"loc":{"start":{"line":2,"column":1},"end":{"line":2,"column":2},"identifierName":"T"},
"name": "T"
}
}
],
"extra": {
"trailingComma": 15
}
}
}
}
],
"directives": []
}
}

2
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter/input.ts vendored Normal file
View File

@ -0,0 +1,2 @@
<T>() => 1;
<T>(x) => 1;

3
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"BABEL_8_BREAKING": true
}

95
packages/babel-parser/test/fixtures/typescript/disallow-jsx-ambiguity/type-parameter/output.json vendored Normal file
View File

@ -0,0 +1,95 @@
{
"type": "File",
"start":0,"end":24,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":12}},
"errors": [
"SyntaxError: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (1:0)",
"SyntaxError: This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (2:0)"
],
"program": {
"type": "Program",
"start":0,"end":24,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":12}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start":0,"end":11,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":11}},
"expression": {
"type": "ArrowFunctionExpression",
"start":0,"end":10,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":10}},
"id": null,
"generator": false,
"async": false,
"params": [],
"body": {
"type": "NumericLiteral",
"start":9,"end":10,"loc":{"start":{"line":1,"column":9},"end":{"line":1,"column":10}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":0,"end":3,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":3}},
"params": [
{
"type": "TSTypeParameter",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2}},
"name": {
"type": "Identifier",
"start":1,"end":2,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":2},"identifierName":"T"},
"name": "T"
}
}
]
}
}
},
{
"type": "ExpressionStatement",
"start":12,"end":24,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":12}},
"expression": {
"type": "ArrowFunctionExpression",
"start":12,"end":23,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":11}},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start":16,"end":17,"loc":{"start":{"line":2,"column":4},"end":{"line":2,"column":5},"identifierName":"x"},
"name": "x"
}
],
"body": {
"type": "NumericLiteral",
"start":22,"end":23,"loc":{"start":{"line":2,"column":10},"end":{"line":2,"column":11}},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
},
"typeParameters": {
"type": "TSTypeParameterDeclaration",
"start":12,"end":15,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":3}},
"params": [
{
"type": "TSTypeParameter",
"start":13,"end":14,"loc":{"start":{"line":2,"column":1},"end":{"line":2,"column":2}},
"name": {
"type": "Identifier",
"start":13,"end":14,"loc":{"start":{"line":2,"column":1},"end":{"line":2,"column":2},"identifierName":"T"},
"name": "T"
}
}
]
}
}
}
],
"directives": []
}
}

1
packages/babel-parser/typings/babel-parser.d.ts vendored
View File

@ -185,6 +185,7 @@ export interface FlowPluginOptions {
export interface TypeScriptPluginOptions {
dts?: boolean;
disallowAmbiguousJSXLike?: boolean;
}
export const tokTypes: {

3
packages/babel-plugin-syntax-typescript/package.json
View File

@ -24,7 +24,8 @@
"@babel/core": "^7.0.0-0"
},
"devDependencies": {
"@babel/core": "workspace:^"
"@babel/core": "workspace:^",
"@babel/helper-plugin-test-runner": "workspace:^"
},
"engines": {
"node": ">=6.9.0"

7
packages/babel-plugin-syntax-typescript/src/index.js
View File

@ -15,7 +15,7 @@ function removePlugin(plugins, name) {
}
}
export default declare((api, { isTSX }) => {
export default declare((api, { isTSX, disallowAmbiguousJSXLike }) => {
api.assertVersion(7);
return {
@ -31,7 +31,10 @@ export default declare((api, { isTSX }) => {
// in TS depends on the extensions, and is purely dependent on 'isTSX'.
removePlugin(plugins, "jsx");
parserOpts.plugins.push("typescript", "classProperties");
parserOpts.plugins.push(
["typescript", { disallowAmbiguousJSXLike }],
"classProperties",
);
if (!process.env.BABEL_8_BREAKING) {
// This is enabled by default since @babel/parser 7.1.5

3
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"plugins": [["syntax-typescript", { "disallowAmbiguousJSXLike": true }]]
}

1
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/type-assertion/input.ts vendored Normal file
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@ -0,0 +1 @@
<T>x;

3
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/type-assertion/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead. (1:0)"
}

2
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/type-parameter-unambiguous/input.ts vendored Normal file
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@ -0,0 +1,2 @@
<T,>() => 1;
<T,>(x) => 1;

3
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/type-parameter-unambiguous/output.js vendored Normal file
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@ -0,0 +1,3 @@
<T>() => 1;
<T>(x) => 1;

2
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/type-parameter/input.ts vendored Normal file
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@ -0,0 +1,2 @@
<T>() => 1;
<T>(x) => 1;

3
packages/babel-plugin-syntax-typescript/test/fixtures/disallow-jsx-ambiguity/type-parameter/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (1:0)"
}

3
packages/babel-plugin-syntax-typescript/test/index.js Normal file
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@ -0,0 +1,3 @@
import runner from "@babel/helper-plugin-test-runner";
runner(import.meta.url);

38
packages/babel-preset-typescript/src/index.js
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@ -8,6 +8,7 @@ export default declare((api, opts) => {
const {
allExtensions,
allowNamespaces,
disallowAmbiguousJSXLike,
isTSX,
jsxPragma,
jsxPragmaFrag,
@ -16,17 +17,19 @@ export default declare((api, opts) => {
} = normalizeOptions(opts);
const pluginOptions = process.env.BABEL_8_BREAKING
? isTSX => ({
? (isTSX, disallowAmbiguousJSXLike) => ({
allowNamespaces,
disallowAmbiguousJSXLike,
isTSX,
jsxPragma,
jsxPragmaFrag,
onlyRemoveTypeImports,
optimizeConstEnums,
})
: isTSX => ({
: (isTSX, disallowAmbiguousJSXLike) => ({
allowDeclareFields: opts.allowDeclareFields,
allowNamespaces,
disallowAmbiguousJSXLike,
isTSX,
jsxPragma,
jsxPragmaFrag,
@ -38,21 +41,36 @@ export default declare((api, opts) => {
overrides: allExtensions
? [
{
plugins: [[transformTypeScript, pluginOptions(isTSX)]],
plugins: [
[
transformTypeScript,
pluginOptions(isTSX, disallowAmbiguousJSXLike),
],
],
},
]
: [
{
// Only set 'test' if explicitly requested, since it requires that
: // Only set 'test' if explicitly requested, since it requires that
// Babel is being called`
[
{
test: /\.ts$/,
plugins: [[transformTypeScript, pluginOptions(false)]],
plugins: [[transformTypeScript, pluginOptions(false, false)]],
},
{
test: /\.mts$/,
sourceType: "module",
plugins: [[transformTypeScript, pluginOptions(false, true)]],
},
{
test: /\.cts$/,
sourceType: "script",
plugins: [[transformTypeScript, pluginOptions(false, true)]],
},
{
// Only set 'test' if explicitly requested, since it requires that
// Babel is being called`
test: /\.tsx$/,
plugins: [[transformTypeScript, pluginOptions(true)]],
// disallowAmbiguousJSXLike is a no-op when parsing TSX, since it's
// always disallowed.
plugins: [[transformTypeScript, pluginOptions(true, false)]],
},
],
};

14
packages/babel-preset-typescript/src/normalize-options.js
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@ -7,6 +7,7 @@ export default function normalizeOptions(options = {}) {
const TopLevelOptions = {
allExtensions: "allExtensions",
allowNamespaces: "allowNamespaces",
disallowAmbiguousJSXLike: "disallowAmbiguousJSXLike",
isTSX: "isTSX",
jsxPragma: "jsxPragma",
jsxPragmaFrag: "jsxPragmaFrag",
@ -54,6 +55,18 @@ export default function normalizeOptions(options = {}) {
v.invariant(allExtensions, "isTSX:true requires allExtensions:true");
}
const disallowAmbiguousJSXLike = v.validateBooleanOption(
TopLevelOptions.disallowAmbiguousJSXLike,
options.disallowAmbiguousJSXLike,
false,
);
if (disallowAmbiguousJSXLike) {
v.invariant(
allExtensions,
"disallowAmbiguousJSXLike:true requires allExtensions:true",
);
}
const optimizeConstEnums = v.validateBooleanOption(
TopLevelOptions.optimizeConstEnums,
options.optimizeConstEnums,
@ -63,6 +76,7 @@ export default function normalizeOptions(options = {}) {
return {
allExtensions,
allowNamespaces,
disallowAmbiguousJSXLike,
isTSX,
jsxPragma,
jsxPragmaFrag,

1
packages/babel-preset-typescript/test/fixtures/node-extensions/import-in-cts/input.cts vendored Normal file
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@ -0,0 +1 @@
import "x";

3
packages/babel-preset-typescript/test/fixtures/node-extensions/import-in-cts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "'import' and 'export' may appear only with 'sourceType: \"module\"' (1:0)"
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/import-in-mts/input.mts vendored Normal file
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@ -0,0 +1 @@
import "x";

1
packages/babel-preset-typescript/test/fixtures/node-extensions/import-in-mts/output.mjs vendored Normal file
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@ -0,0 +1 @@
import "x";

4
packages/babel-preset-typescript/test/fixtures/node-extensions/options.json vendored Normal file
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@ -0,0 +1,4 @@
{
"DO_NOT_SET_SOURCE_TYPE": true,
"presets": ["typescript"]
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-cts/input.cts vendored Normal file
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@ -0,0 +1 @@
<T> x;

3
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-cts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead. (1:0)"
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-mts/input.mts vendored Normal file
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@ -0,0 +1 @@
<T> x;

3
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-mts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead. (1:0)"
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-ts/input.ts vendored Normal file
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@ -0,0 +1 @@
<T> x;

3
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-ts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"DO_NOT_SET_SOURCE_TYPE": false
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-assertion-in-ts/output.js vendored Normal file
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@ -0,0 +1 @@
x;

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-cts/input.mts vendored Normal file
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@ -0,0 +1 @@
<T>() => 0;

3
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-cts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (1:0)"
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-mts/input.mts vendored Normal file
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@ -0,0 +1 @@
<T>() => 0;

3
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-mts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`. (1:0)"
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-ts/input.ts vendored Normal file
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@ -0,0 +1 @@
<T>() => 0;

3
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-ts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"DO_NOT_SET_SOURCE_TYPE": false
}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/type-param-arrow-in-ts/output.js vendored Normal file
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@ -0,0 +1 @@
() => 0;

1
packages/babel-preset-typescript/test/fixtures/node-extensions/with-in-cts/input.cts vendored Normal file
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@ -0,0 +1 @@
with (x) {}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/with-in-cts/output.js vendored Normal file
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@ -0,0 +1 @@
with (x) {}

1
packages/babel-preset-typescript/test/fixtures/node-extensions/with-in-mts/input.mts vendored Normal file
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@ -0,0 +1 @@
with (x) {}

3
packages/babel-preset-typescript/test/fixtures/node-extensions/with-in-mts/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "'with' in strict mode. (1:0)"
}

2
packages/babel-preset-typescript/test/normalize-options.spec.js
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@ -33,6 +33,7 @@ describe("normalize options", () => {
Object {
"allExtensions": false,
"allowNamespaces": true,
"disallowAmbiguousJSXLike": false,
"isTSX": false,
"jsxPragma": "React",
"jsxPragmaFrag": "React.Fragment",
@ -81,6 +82,7 @@ describe("normalize options", () => {
Object {
"allExtensions": false,
"allowNamespaces": true,
"disallowAmbiguousJSXLike": false,
"isTSX": false,
"jsxPragma": undefined,
"jsxPragmaFrag": "React.Fragment",

1
yarn.lock
View File

@ -2021,6 +2021,7 @@ __metadata:
resolution: "@babel/plugin-syntax-typescript@workspace:packages/babel-plugin-syntax-typescript"
dependencies:
"@babel/core": "workspace:^"
"@babel/helper-plugin-test-runner": "workspace:^"
"@babel/helper-plugin-utils": "workspace:^"
peerDependencies:
"@babel/core": ^7.0.0-0