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useExponentiationOperator

Diagnostic Category: lint/style/useExponentiationOperator

Since: v1.0.0

Sources:

Disallow the use of Math.pow in favor of the ** operator.

Introduced in ES2016, the infix exponentiation operator ** is an alternative for the standard Math.pow function. Infix notation is considered to be more readable and thus more preferable than the function notation.

const foo = Math.pow(2, 8);
code-block.js:1:13 lint/style/useExponentiationOperator  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Use the ’**’ operator instead of ‘Math.pow’.

> 1 │ const foo = Math.pow(2, 8);
^^^^^^^^^^^^^^
2 │

Unsafe fix: Use the ’**’ operator instead of ‘Math.pow’.

1 - const·foo·=·Math.pow(2,·8);
1+ const·foo·=·2·**·8;
2 2

const bar = Math.pow(a, b);
code-block.js:1:13 lint/style/useExponentiationOperator  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Use the ’**’ operator instead of ‘Math.pow’.

> 1 │ const bar = Math.pow(a, b);
^^^^^^^^^^^^^^
2 │

Unsafe fix: Use the ’**’ operator instead of ‘Math.pow’.

1 - const·bar·=·Math.pow(a,·b);
1+ const·bar·=·a·**·b;
2 2

let baz = Math.pow(a + b, c + d);
code-block.js:1:11 lint/style/useExponentiationOperator  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Use the ’**’ operator instead of ‘Math.pow’.

> 1 │ let baz = Math.pow(a + b, c + d);
^^^^^^^^^^^^^^^^^^^^^^
2 │

Unsafe fix: Use the ’**’ operator instead of ‘Math.pow’.

1 - let·baz·=·Math.pow(a·+·b,·c·+·d);
1+ let·baz·=·(a·+·b)·**·(c·+·d);
2 2

let quux = Math.pow(-1, n);
code-block.js:1:12 lint/style/useExponentiationOperator  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Use the ’**’ operator instead of ‘Math.pow’.

> 1 │ let quux = Math.pow(-1, n);
^^^^^^^^^^^^^^^
2 │

Unsafe fix: Use the ’**’ operator instead of ‘Math.pow’.

1 - let·quux·=·Math.pow(-1,·n);
1+ let·quux·=·(-1)·**·n;
2 2

const foo = 2 ** 8;
const bar = a ** b;
let baz = (a + b) ** (c + d);
let quux = (-1) ** n;