130 lines
2.4 KiB
TypeScript
130 lines
2.4 KiB
TypeScript
// @strictNullChecks: true
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// @noImplicitAny: true
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declare let cond: boolean;
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// CFA for 'let' with no type annotation and initializer
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function f1() {
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let x;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | undefined
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}
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// CFA for 'let' with no type annotation and 'undefined' initializer
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function f2() {
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let x = undefined;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | undefined
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}
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// CFA for 'let' with no type annotation and 'null' initializer
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function f3() {
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let x = null;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | null
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}
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// No CFA for 'let' with with type annotation
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function f4() {
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let x: any;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // any
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}
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// CFA for 'var' with no type annotation and initializer
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function f5() {
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var x;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | undefined
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}
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// CFA for 'var' with no type annotation and 'undefined' initializer
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function f6() {
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var x = undefined;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | undefined
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}
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// CFA for 'var' with no type annotation and 'null' initializer
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function f7() {
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var x = null;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | null
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}
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// No CFA for 'var' with with type annotation
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function f8() {
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var x: any;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // any
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}
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// No CFA for captured outer variables
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function f9() {
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let x;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | undefined
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function f() {
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const z = x; // any
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}
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}
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// No CFA for captured outer variables
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function f10() {
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let x;
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if (cond) {
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x = 1;
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}
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if (cond) {
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x = "hello";
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}
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const y = x; // string | number | undefined
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const f = () => {
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const z = x; // any
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};
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} |