`math/lerp` test with `lerp(0.2, 0.4, 0.5)` failed

[CatsJuice]

Describe the bug

The lerp method may have accuracy problems when calculating with decimals, which may not matter in some scenarios (such as calculating pixels), but may be confusing in some situations.

// math.test.ts
import { lerp } from './math'

it('lerp', () => {
  expect(lerp(0.2, 0.4, 0.5)).toMatchInlineSnapshot('0.30000000000000004')
})

Reproduction

https://github.com/CatsJuice/mir-antfu-utils-math-lerp-precision

System Info

System:
    OS: macOS 14.0
    CPU: (10) arm64 Apple M1 Pro
    Memory: 67.19 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.16.0 - ~/.nvm/versions/node/v18.16.0/bin/node
    Yarn: 1.22.17 - /usr/local/bin/yarn
    npm: 9.5.1 - ~/.nvm/versions/node/v18.16.0/bin/npm
  Browsers:
    Safari: 17.0

Used Package Manager

pnpm

Validations

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• The provided reproduction is a minimal reproducible of the bug.