useLiteralKeys (since v12.1.0)
Enforce the usage of a literal access to properties over computed property access.
Examples
Invalid
a.b["c"];nursery/useLiteralKeys.js:1:5 lint/nursery/useLiteralKeys FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ The computed expression can be simplified without the use of a string literal.
> 1 │ a.b["c"];
│ ^^^
2 │
ℹ Suggested fix: Replace it with a static expression.
1 │ - a.b["c"];
1 │ + a.b.c;
2 2 │
a.c[`d`]nursery/useLiteralKeys.js:1:5 lint/nursery/useLiteralKeys FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ The computed expression can be simplified without the use of a string literal.
> 1 │ a.c[`d`]
│ ^^^
2 │
ℹ Suggested fix: Replace it with a static expression.
1 │ - a.c[`d`]
1 │ + a.c.d
2 2 │
a.c[`d`] = "something"nursery/useLiteralKeys.js:1:5 lint/nursery/useLiteralKeys FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ The computed expression can be simplified without the use of a string literal.
> 1 │ a.c[`d`] = "something"
│ ^^^
2 │
ℹ Suggested fix: Replace it with a static expression.
1 │ - a.c[`d`]·=·"something"
1 │ + a.c.d·=·"something"
2 2 │
a = {
['b']: d
}nursery/useLiteralKeys.js:2:3 lint/nursery/useLiteralKeys FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ The computed expression can be simplified without the use of a string literal.
1 │ a = {
> 2 │ ['b']: d
│ ^^^
3 │ }
4 │
ℹ Suggested fix: Replace it with a static expression.
2 │ → ['b']:·d
│ -- --
Valid
a["c" + "d"];
a[d.c];