noYodaExpression (since v1.8.0)
Diagnostic Category: lint/nursery/noYodaExpression
Sources:
- Same as:
yoda
Disallow the use of yoda expressions.
A Yoda expression is a programming style where, given a binary operation, the “static” part of the binary operation is placed on the left-hand side. This rule forbids the use of Yoda expressions and enforces the placing of the “static” part of the binary operations on the right-hand side.
Exceptions
Section titled ExceptionsRange expressions like 0 < value && value < 1 or value <= 0 || 1 < value are allowed.
Examples
Section titled ExamplesInvalid
Section titled Invalidif ("red" == value) {}code-block.js:1:5 lint/nursery/noYodaExpression FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚠ Avoid the use of yoda expressions.
> 1 │ if ("red" == value) {}
│ ^^^^^^^^^^^^^^
2 │
ℹ Yoda expressions can be confusing to some people, invert the expression operands for better readability.
ℹ Safe fix: Flip the operators of the expression.
1 │ - if·("red"·==·value)·{}
1 │ + if·(value·==·"red")·{}
2 2 │
if (true === value) {}code-block.js:1:5 lint/nursery/noYodaExpression FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚠ Avoid the use of yoda expressions.
> 1 │ if (true === value) {}
│ ^^^^^^^^^^^^^^
2 │
ℹ Yoda expressions can be confusing to some people, invert the expression operands for better readability.
ℹ Safe fix: Flip the operators of the expression.
1 │ - if·(true·===·value)·{}
1 │ + if·(value·===·true)·{}
2 2 │
if (5 != value) {}code-block.js:1:5 lint/nursery/noYodaExpression FIXABLE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚠ Avoid the use of yoda expressions.
> 1 │ if (5 != value) {}
│ ^^^^^^^^^^
2 │
ℹ Yoda expressions can be confusing to some people, invert the expression operands for better readability.
ℹ Safe fix: Flip the operators of the expression.
1 │ - if·(5·!=·value)·{}
1 │ + if·(value·!=·5)·{}
2 2 │
Valid
Section titled Validif (value === "red") {}if (value === value) {}if (value != 5) {}if (0 < value && value < 1) {}