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Contextually type IIFE params by their arguments
This commit is contained in:
Nathan Shively-Sanders
parent
673fa41418
commit
aa38cdba56
@ -8520,6 +8520,17 @@ namespace ts {
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function getContextuallyTypedParameterType(parameter: ParameterDeclaration): Type {
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const func = parameter.parent;
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if (isContextSensitiveFunctionOrObjectLiteralMethod(func)) {
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if (isIife(func)) {
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const indexOfParameter = indexOf(func.parameters, parameter);
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const call = func.parent.parent as CallExpression;
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if (indexOfParameter < call.arguments.length) {
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const type = getTypeOfExpression(call.arguments[indexOfParameter]);
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if (type && parameter.dotDotDotToken) {
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return createArrayType(type);
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}
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return type;
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}
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}
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const contextualSignature = getContextualSignature(func);
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if (contextualSignature) {
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const funcHasRestParameters = hasRestParameter(func);
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@ -8540,6 +8551,13 @@ namespace ts {
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return undefined;
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}
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function isIife(func: FunctionExpression | MethodDeclaration) {
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return (func.kind === SyntaxKind.FunctionExpression || func.kind === SyntaxKind.ArrowFunction) &&
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func.parent.kind === SyntaxKind.ParenthesizedExpression &&
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func.parent.parent.kind === SyntaxKind.CallExpression &&
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(func.parent.parent as CallExpression).expression === func.parent;
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}
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// In a variable, parameter or property declaration with a type annotation,
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// the contextual type of an initializer expression is the type of the variable, parameter or property.
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// Otherwise, in a parameter declaration of a contextually typed function expression,
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@ -8898,9 +8916,9 @@ namespace ts {
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}
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function getContextualTypeForFunctionLikeDeclaration(node: FunctionExpression | MethodDeclaration) {
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return isObjectLiteralMethod(node)
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? getContextualTypeForObjectLiteralMethod(node)
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: getApparentTypeOfContextualType(node);
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return isObjectLiteralMethod(node) ?
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getContextualTypeForObjectLiteralMethod(node) :
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getApparentTypeOfContextualType(node);
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}
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// Return the contextual signature for a given expression node. A contextual type provides a
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90
tests/baselines/reference/contextuallyTypedIife.js
Normal file
90
tests/baselines/reference/contextuallyTypedIife.js
Normal file
@ -0,0 +1,90 @@
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//// [contextuallyTypedIife.ts]
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// arrow
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(jake => { })("build");
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// function expression
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(function (cats) { })("lol");
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// multiple arguments
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((a, b, c) => { })("foo", 101, false);
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// contextually typed parameters.
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(f => f(1))(i => i + 1);
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// default parameters
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((m = 10) => m + 1)(12);
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((n = 10) => n + 1)();
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// optional parameters
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((j?) => j + 1)(12);
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((k?) => k + 1)();
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((l, o?) => l + o)(12); // o should be any
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// rest parameters
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((...numbers) => numbers.every(n => n > 0))(5,6,7);
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((...noNumbers) => noNumbers.some(n => n > 0))();
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((first, ...rest) => first ? [] : rest.map(n => n > 0))(8,9,10);
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// destructuring parameters (with defaults too!)
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(({ q }) => q)({ q : 13 });
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(({ p = 14 }) => p)({ p : 15 });
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(({ r = 17 } = { r: 18 }) => r)({r : 19});
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(({ u = 22 } = { u: 23 }) => u)();
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//// [contextuallyTypedIife.js]
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// arrow
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(function (jake) { })("build");
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// function expression
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(function (cats) { })("lol");
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// multiple arguments
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(function (a, b, c) { })("foo", 101, false);
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// contextually typed parameters.
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(function (f) { return f(1); })(function (i) { return i + 1; });
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// default parameters
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(function (m) {
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if (m === void 0) { m = 10; }
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return m + 1;
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})(12);
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(function (n) {
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if (n === void 0) { n = 10; }
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return n + 1;
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})();
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// optional parameters
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(function (j) { return j + 1; })(12);
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(function (k) { return k + 1; })();
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(function (l, o) { return l + o; })(12); // o should be any
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// rest parameters
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(function () {
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var numbers = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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numbers[_i - 0] = arguments[_i];
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}
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return numbers.every(function (n) { return n > 0; });
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})(5, 6, 7);
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(function () {
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var noNumbers = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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noNumbers[_i - 0] = arguments[_i];
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}
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return noNumbers.some(function (n) { return n > 0; });
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})();
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(function (first) {
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var rest = [];
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for (var _i = 1; _i < arguments.length; _i++) {
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rest[_i - 1] = arguments[_i];
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}
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return first ? [] : rest.map(function (n) { return n > 0; });
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})(8, 9, 10);
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// destructuring parameters (with defaults too!)
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(function (_a) {
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var q = _a.q;
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return q;
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})({ q: 13 });
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(function (_a) {
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var _b = _a.p, p = _b === void 0 ? 14 : _b;
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return p;
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})({ p: 15 });
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(function (_a) {
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var _b = (_a === void 0 ? { r: 18 } : _a).r, r = _b === void 0 ? 17 : _b;
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return r;
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})({ r: 19 });
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(function (_a) {
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var _b = (_a === void 0 ? { u: 23 } : _a).u, u = _b === void 0 ? 22 : _b;
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return u;
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})();
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97
tests/baselines/reference/contextuallyTypedIife.symbols
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97
tests/baselines/reference/contextuallyTypedIife.symbols
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@ -0,0 +1,97 @@
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=== tests/cases/conformance/expressions/functions/contextuallyTypedIife.ts ===
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// arrow
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(jake => { })("build");
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>jake : Symbol(jake, Decl(contextuallyTypedIife.ts, 1, 1))
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// function expression
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(function (cats) { })("lol");
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>cats : Symbol(cats, Decl(contextuallyTypedIife.ts, 3, 11))
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// multiple arguments
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((a, b, c) => { })("foo", 101, false);
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>a : Symbol(a, Decl(contextuallyTypedIife.ts, 5, 2))
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>b : Symbol(b, Decl(contextuallyTypedIife.ts, 5, 4))
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>c : Symbol(c, Decl(contextuallyTypedIife.ts, 5, 7))
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// contextually typed parameters.
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(f => f(1))(i => i + 1);
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>f : Symbol(f, Decl(contextuallyTypedIife.ts, 7, 1))
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>f : Symbol(f, Decl(contextuallyTypedIife.ts, 7, 1))
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>i : Symbol(i, Decl(contextuallyTypedIife.ts, 7, 12))
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>i : Symbol(i, Decl(contextuallyTypedIife.ts, 7, 12))
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// default parameters
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((m = 10) => m + 1)(12);
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>m : Symbol(m, Decl(contextuallyTypedIife.ts, 9, 2))
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>m : Symbol(m, Decl(contextuallyTypedIife.ts, 9, 2))
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((n = 10) => n + 1)();
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 10, 2))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 10, 2))
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// optional parameters
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((j?) => j + 1)(12);
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>j : Symbol(j, Decl(contextuallyTypedIife.ts, 12, 2))
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>j : Symbol(j, Decl(contextuallyTypedIife.ts, 12, 2))
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((k?) => k + 1)();
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>k : Symbol(k, Decl(contextuallyTypedIife.ts, 13, 2))
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>k : Symbol(k, Decl(contextuallyTypedIife.ts, 13, 2))
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((l, o?) => l + o)(12); // o should be any
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>l : Symbol(l, Decl(contextuallyTypedIife.ts, 14, 2))
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>o : Symbol(o, Decl(contextuallyTypedIife.ts, 14, 4))
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>l : Symbol(l, Decl(contextuallyTypedIife.ts, 14, 2))
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>o : Symbol(o, Decl(contextuallyTypedIife.ts, 14, 4))
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// rest parameters
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((...numbers) => numbers.every(n => n > 0))(5,6,7);
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>numbers : Symbol(numbers, Decl(contextuallyTypedIife.ts, 16, 2))
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>numbers.every : Symbol(Array.every, Decl(lib.d.ts, --, --))
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>numbers : Symbol(numbers, Decl(contextuallyTypedIife.ts, 16, 2))
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>every : Symbol(Array.every, Decl(lib.d.ts, --, --))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 16, 31))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 16, 31))
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((...noNumbers) => noNumbers.some(n => n > 0))();
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>noNumbers : Symbol(noNumbers, Decl(contextuallyTypedIife.ts, 17, 2))
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>noNumbers.some : Symbol(Array.some, Decl(lib.d.ts, --, --))
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>noNumbers : Symbol(noNumbers, Decl(contextuallyTypedIife.ts, 17, 2))
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>some : Symbol(Array.some, Decl(lib.d.ts, --, --))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 17, 34))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 17, 34))
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((first, ...rest) => first ? [] : rest.map(n => n > 0))(8,9,10);
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>first : Symbol(first, Decl(contextuallyTypedIife.ts, 18, 2))
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>rest : Symbol(rest, Decl(contextuallyTypedIife.ts, 18, 8))
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>first : Symbol(first, Decl(contextuallyTypedIife.ts, 18, 2))
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>rest.map : Symbol(Array.map, Decl(lib.d.ts, --, --))
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>rest : Symbol(rest, Decl(contextuallyTypedIife.ts, 18, 8))
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>map : Symbol(Array.map, Decl(lib.d.ts, --, --))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 18, 43))
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>n : Symbol(n, Decl(contextuallyTypedIife.ts, 18, 43))
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// destructuring parameters (with defaults too!)
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(({ q }) => q)({ q : 13 });
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>q : Symbol(q, Decl(contextuallyTypedIife.ts, 20, 3))
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>q : Symbol(q, Decl(contextuallyTypedIife.ts, 20, 3))
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>q : Symbol(q, Decl(contextuallyTypedIife.ts, 20, 16))
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(({ p = 14 }) => p)({ p : 15 });
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>p : Symbol(p, Decl(contextuallyTypedIife.ts, 21, 3))
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>p : Symbol(p, Decl(contextuallyTypedIife.ts, 21, 3))
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>p : Symbol(p, Decl(contextuallyTypedIife.ts, 21, 21))
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(({ r = 17 } = { r: 18 }) => r)({r : 19});
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>r : Symbol(r, Decl(contextuallyTypedIife.ts, 22, 3))
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>r : Symbol(r, Decl(contextuallyTypedIife.ts, 22, 16))
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>r : Symbol(r, Decl(contextuallyTypedIife.ts, 22, 3))
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>r : Symbol(r, Decl(contextuallyTypedIife.ts, 22, 33))
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(({ u = 22 } = { u: 23 }) => u)();
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>u : Symbol(u, Decl(contextuallyTypedIife.ts, 23, 3))
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>u : Symbol(u, Decl(contextuallyTypedIife.ts, 23, 16))
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>u : Symbol(u, Decl(contextuallyTypedIife.ts, 23, 3))
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202
tests/baselines/reference/contextuallyTypedIife.types
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202
tests/baselines/reference/contextuallyTypedIife.types
Normal file
@ -0,0 +1,202 @@
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=== tests/cases/conformance/expressions/functions/contextuallyTypedIife.ts ===
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// arrow
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(jake => { })("build");
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>(jake => { })("build") : void
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>(jake => { }) : (jake: string) => void
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>jake => { } : (jake: string) => void
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>jake : string
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>"build" : string
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// function expression
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(function (cats) { })("lol");
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>(function (cats) { })("lol") : void
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>(function (cats) { }) : (cats: string) => void
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>function (cats) { } : (cats: string) => void
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>cats : string
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>"lol" : string
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// multiple arguments
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((a, b, c) => { })("foo", 101, false);
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>((a, b, c) => { })("foo", 101, false) : void
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>((a, b, c) => { }) : (a: string, b: number, c: boolean) => void
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>(a, b, c) => { } : (a: string, b: number, c: boolean) => void
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>a : string
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>b : number
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>c : boolean
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>"foo" : string
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>101 : number
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>false : boolean
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// contextually typed parameters.
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(f => f(1))(i => i + 1);
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>(f => f(1))(i => i + 1) : any
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>(f => f(1)) : (f: (i: any) => any) => any
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>f => f(1) : (f: (i: any) => any) => any
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>f : (i: any) => any
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>f(1) : any
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>f : (i: any) => any
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>1 : number
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>i => i + 1 : (i: any) => any
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>i : any
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>i + 1 : any
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>i : any
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>1 : number
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// default parameters
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((m = 10) => m + 1)(12);
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>((m = 10) => m + 1)(12) : number
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>((m = 10) => m + 1) : (m?: number) => number
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>(m = 10) => m + 1 : (m?: number) => number
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>m : number
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>10 : number
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>m + 1 : number
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>m : number
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>1 : number
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>12 : number
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((n = 10) => n + 1)();
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>((n = 10) => n + 1)() : number
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>((n = 10) => n + 1) : (n?: number) => number
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>(n = 10) => n + 1 : (n?: number) => number
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>n : number
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>10 : number
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>n + 1 : number
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>n : number
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>1 : number
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// optional parameters
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((j?) => j + 1)(12);
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>((j?) => j + 1)(12) : number
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>((j?) => j + 1) : (j?: number) => number
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>(j?) => j + 1 : (j?: number) => number
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>j : number
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>j + 1 : number
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>j : number
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>1 : number
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>12 : number
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((k?) => k + 1)();
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>((k?) => k + 1)() : any
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>((k?) => k + 1) : (k?: any) => any
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>(k?) => k + 1 : (k?: any) => any
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>k : any
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>k + 1 : any
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>k : any
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>1 : number
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((l, o?) => l + o)(12); // o should be any
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>((l, o?) => l + o)(12) : any
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>((l, o?) => l + o) : (l: number, o?: any) => any
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>(l, o?) => l + o : (l: number, o?: any) => any
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>l : number
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>o : any
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>l + o : any
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>l : number
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>o : any
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>12 : number
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// rest parameters
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((...numbers) => numbers.every(n => n > 0))(5,6,7);
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>((...numbers) => numbers.every(n => n > 0))(5,6,7) : boolean
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>((...numbers) => numbers.every(n => n > 0)) : (...numbers: number[]) => boolean
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>(...numbers) => numbers.every(n => n > 0) : (...numbers: number[]) => boolean
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>numbers : number[]
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>numbers.every(n => n > 0) : boolean
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>numbers.every : (callbackfn: (value: number, index: number, array: number[]) => boolean, thisArg?: any) => boolean
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>numbers : number[]
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>every : (callbackfn: (value: number, index: number, array: number[]) => boolean, thisArg?: any) => boolean
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>n => n > 0 : (n: number) => boolean
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>n : number
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>n > 0 : boolean
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>n : number
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>0 : number
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>5 : number
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>6 : number
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>7 : number
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((...noNumbers) => noNumbers.some(n => n > 0))();
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>((...noNumbers) => noNumbers.some(n => n > 0))() : boolean
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>((...noNumbers) => noNumbers.some(n => n > 0)) : (...noNumbers: any[]) => boolean
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>(...noNumbers) => noNumbers.some(n => n > 0) : (...noNumbers: any[]) => boolean
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>noNumbers : any[]
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>noNumbers.some(n => n > 0) : boolean
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>noNumbers.some : (callbackfn: (value: any, index: number, array: any[]) => boolean, thisArg?: any) => boolean
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>noNumbers : any[]
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>some : (callbackfn: (value: any, index: number, array: any[]) => boolean, thisArg?: any) => boolean
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>n => n > 0 : (n: any) => boolean
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>n : any
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>n > 0 : boolean
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>n : any
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>0 : number
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((first, ...rest) => first ? [] : rest.map(n => n > 0))(8,9,10);
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>((first, ...rest) => first ? [] : rest.map(n => n > 0))(8,9,10) : boolean[]
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>((first, ...rest) => first ? [] : rest.map(n => n > 0)) : (first: number, ...rest: number[]) => boolean[]
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>(first, ...rest) => first ? [] : rest.map(n => n > 0) : (first: number, ...rest: number[]) => boolean[]
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>first : number
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>rest : number[]
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>first ? [] : rest.map(n => n > 0) : boolean[]
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>first : number
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>[] : undefined[]
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>rest.map(n => n > 0) : boolean[]
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>rest.map : <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]
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>rest : number[]
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>map : <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]
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>n => n > 0 : (n: number) => boolean
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>n : number
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>n > 0 : boolean
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>n : number
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>0 : number
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>8 : number
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>9 : number
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>10 : number
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// destructuring parameters (with defaults too!)
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(({ q }) => q)({ q : 13 });
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>(({ q }) => q)({ q : 13 }) : number
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>(({ q }) => q) : ({q}: { q: number; }) => number
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>({ q }) => q : ({q}: { q: number; }) => number
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>q : number
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>q : number
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||||
>{ q : 13 } : { q: number; }
|
||||
>q : number
|
||||
>13 : number
|
||||
|
||||
(({ p = 14 }) => p)({ p : 15 });
|
||||
>(({ p = 14 }) => p)({ p : 15 }) : number
|
||||
>(({ p = 14 }) => p) : ({p}: { p: number; }) => number
|
||||
>({ p = 14 }) => p : ({p}: { p: number; }) => number
|
||||
>p : number
|
||||
>14 : number
|
||||
>p : number
|
||||
>{ p : 15 } : { p: number; }
|
||||
>p : number
|
||||
>15 : number
|
||||
|
||||
(({ r = 17 } = { r: 18 }) => r)({r : 19});
|
||||
>(({ r = 17 } = { r: 18 }) => r)({r : 19}) : number
|
||||
>(({ r = 17 } = { r: 18 }) => r) : ({r}?: { r: number; }) => number
|
||||
>({ r = 17 } = { r: 18 }) => r : ({r}?: { r: number; }) => number
|
||||
>r : number
|
||||
>17 : number
|
||||
>{ r: 18 } : { r: number; }
|
||||
>r : number
|
||||
>18 : number
|
||||
>r : number
|
||||
>{r : 19} : { r: number; }
|
||||
>r : number
|
||||
>19 : number
|
||||
|
||||
(({ u = 22 } = { u: 23 }) => u)();
|
||||
>(({ u = 22 } = { u: 23 }) => u)() : number
|
||||
>(({ u = 22 } = { u: 23 }) => u) : ({u}?: { u?: number; }) => number
|
||||
>({ u = 22 } = { u: 23 }) => u : ({u}?: { u?: number; }) => number
|
||||
>u : number
|
||||
>22 : number
|
||||
>{ u: 23 } : { u?: number; }
|
||||
>u : number
|
||||
>23 : number
|
||||
>u : number
|
||||
|
||||
|
||||
|
||||
@ -0,0 +1,26 @@
|
||||
// arrow
|
||||
(jake => { })("build");
|
||||
// function expression
|
||||
(function (cats) { })("lol");
|
||||
// multiple arguments
|
||||
((a, b, c) => { })("foo", 101, false);
|
||||
// contextually typed parameters.
|
||||
(f => f(1))(i => i + 1);
|
||||
// default parameters
|
||||
((m = 10) => m + 1)(12);
|
||||
((n = 10) => n + 1)();
|
||||
// optional parameters
|
||||
((j?) => j + 1)(12);
|
||||
((k?) => k + 1)();
|
||||
((l, o?) => l + o)(12); // o should be any
|
||||
// rest parameters
|
||||
((...numbers) => numbers.every(n => n > 0))(5,6,7);
|
||||
((...noNumbers) => noNumbers.some(n => n > 0))();
|
||||
((first, ...rest) => first ? [] : rest.map(n => n > 0))(8,9,10);
|
||||
// destructuring parameters (with defaults too!)
|
||||
(({ q }) => q)({ q : 13 });
|
||||
(({ p = 14 }) => p)({ p : 15 });
|
||||
(({ r = 17 } = { r: 18 }) => r)({r : 19});
|
||||
(({ u = 22 } = { u: 23 }) => u)();
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user