Use BemCell

[blond]

https://github.com/bem-sdk/bem-cell

In publick API:

• format(decl: BemCell[], opts: {format: 'v1'|'v2'|'enb'}): *
• stringify(BemCell[], {format: String}): String
• merge(BemCell[], BemCell[], ...): BemCell[])
• intersect(BemCell[], BemCell[], ...): BemCell[]
• subtract(BemCell[], BemCell[]): BemCell[])

In private API:

• ~assign(cell: BemCell, scope: BemEntityName): BemCell~
• normalize(*, {format: String}): BemCell[]

UPD:

• assign(cell: {entity: BemCell-like, scope: BemCell): BemCell

[blond]

Depends on https://github.com/bem-sdk/bem-cell/issues/1

[qfox]

Need to implement:

Cross tech decl algebra:

// U — merge
[{ entity: A }] U [{ entity: A, tech: '1' }] →
    → [{ entity: A }, { entity: A, tech: '1' }] // Because any tech can be not '1' in result
[{ entity: A, tech: '1' }] U [{ entity: A, tech: '2' }] →
    → [{ entity: A, tech: '1' }, { entity: A, tech: '2' }]

// / — subtract
[{ entity: A }] / [{ entity: A, tech: 'specified' }] → [{ entity: A }]
[{ entity: A, tech: 'specified' }] / [{ entity: A }] → []
[{ entity: A, tech: 'specified' }] / [{ tech: 'specified' }] → []

// П — intersect
[{ entity: A }] П [{ entity: A, tech: 'specified' }] → [{ entity: A, tech: 'specified' }]
[{ entity: A, tech: '1' }] П [{ entity: A, tech: '2' }] → []
[{ tech: '1' }] П [{ entity: A, tech: '1' }] → [{ entity: A, tech: '1' }]

[Yeti-or]

@zxqfox is it done?

[qfox]

Yeah, it's like done