I made an eslint plugin some time ago that's reached v2 and I thought it was now useful enough to share more broadly.
Essentially it offers replacements like:
from
to
plugin will also suggest
0.1 + 0.2
BigNumber.sum(0.1, 0.2)
('').concat(0.1, 0.2) and `${0.1}${0.2}` when you want string-concatenation instead of FP arithmetic
result === 0.3
BigNumber(result).isEqualTo(0.3)
Object.is(result, 0.3) when you want to strictly compare things that are not FP calculations
19.99 * 0.1
BigNumber(19.99).multipliedBy(0.1)
1 < 2
BigNumber(1).isLessThan(2)
2 >>> 4
BigNumber(2).shiftedBy(4)
4 << 2
BigNumber(4).shiftedBy(-2)
Math.min(1, 2)
BigNumber.minimum(1, 2)
Math.sign(-6)
BigNumber(-6).comparedTo(0)
(1).toFixed(2)
BigNumber(1).toFixed(2)
parseFloat('1.2')
BigNumber('1.2')
Number.parseFloat('2.1')
BigNumber('2.1')
There's configuration to enforce the rules only in files that import 'bignumber.js', along with other ways and means to mitigate the number of warnings if you introduce the plugin into a large code-base.
It's proved useful to me and I hope for others too.
I made an eslint plugin some time ago that's reached v2 and I thought it was now useful enough to share more broadly.
Essentially it offers replacements like:
0.1 + 0.2BigNumber.sum(0.1, 0.2)('').concat(0.1, 0.2)and`${0.1}${0.2}`when you want string-concatenation instead of FP arithmeticresult === 0.3BigNumber(result).isEqualTo(0.3)Object.is(result, 0.3)when you want to strictly compare things that are not FP calculations19.99 * 0.1BigNumber(19.99).multipliedBy(0.1)1 < 2BigNumber(1).isLessThan(2)2 >>> 4BigNumber(2).shiftedBy(4)4 << 2BigNumber(4).shiftedBy(-2)Math.min(1, 2)BigNumber.minimum(1, 2)Math.sign(-6)BigNumber(-6).comparedTo(0)(1).toFixed(2)BigNumber(1).toFixed(2)parseFloat('1.2')BigNumber('1.2')Number.parseFloat('2.1')BigNumber('2.1')There's configuration to enforce the rules only in files that
import 'bignumber.js', along with other ways and means to mitigate the number of warnings if you introduce the plugin into a large code-base.It's proved useful to me and I hope for others too.