Feature Request: flex values

[tnir]

Lint values for flex properties to use the predefined values.

Bad

.flex-zero {
    flex: 0;
}
.flex-zero {
    flex: 1;
}
.flex-initial {
    flex: 0 1 auto;
}
.flex-auto {
    flex: 1 1 auto;
}
.flex-none {
    flex: 0 0 auto;
}

Good

.flex-zero {
    flex: initial;
}
.flex-zero {
    flex: auto;
}
.flex-initial {
    flex: initial;
}
.flex-auto {
    flex: auto;
}
.flex-none {
    flex: none;
}

Reference(s)

• https://developer.mozilla.org/en-US/docs/Web/CSS/flex

[sds]

Happy to accept a pull request implementing this, @tnir!