File: typeSatisfaction_propNameConstraining.js

package info (click to toggle)
node-typescript 4.9.5%2Bds1-2
  • links: PTS, VCS
  • area: main
  • in suites: sid, trixie
  • size: 533,908 kB
  • sloc: javascript: 2,018,330; makefile: 7; sh: 1
file content (27 lines) | stat: -rw-r--r-- 704 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
//// [typeSatisfaction_propNameConstraining.ts]
type Keys = 'a' | 'b' | 'c' | 'd';

const p = {
    a: 0,
    b: "hello",
    x: 8 // Should error, 'x' isn't in 'Keys'
} satisfies Partial<Record<Keys, unknown>>;

// Should be OK -- retain info that a is number and b is string
let a = p.a.toFixed();
let b = p.b.substring(1);
// Should error even though 'd' is in 'Keys'
let d = p.d;


//// [typeSatisfaction_propNameConstraining.js]
var p = {
    a: 0,
    b: "hello",
    x: 8 // Should error, 'x' isn't in 'Keys'
};
// Should be OK -- retain info that a is number and b is string
var a = p.a.toFixed();
var b = p.b.substring(1);
// Should error even though 'd' is in 'Keys'
var d = p.d;