Package Exports

postcss-nested
postcss-nested/index.js

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Readme

PostCSS Nested

PostCSS plugin to unwrap nested rules closer to Sass syntax.

.phone {
  &_title {
    width: 500px;
    @media (max-width: 500px) {
      width: auto;
    }
    body.is_dark & {
      color: white;
    }
  }
  img {
    display: block;
  }
}

.title {
  font-size: var(--font);

  @at-root html {
    --font: 16px;
  }
}

will be processed to:

.phone_title {
  width: 500px;
}
@media (max-width: 500px) {
  .phone_title {
    width: auto;
  }
}
body.is_dark .phone_title {
  color: white;
}
.phone img {
  display: block;
}

.title {
  font-size: var(--font);
}
html {
  --font: 16px;
}

Related plugins:

Use postcss-current-selector after this plugin if you want to use current selector in properties or variables values.
Use postcss-nested-ancestors before this plugin if you want to reference any ancestor element directly in your selectors with ^&.

Alternatives:

See also postcss-nesting, which implements CSSWG draft.
postcss-nested-props for nested properties like font-size.

Docs

Read full docs here.