WOC — Weight of Class

Class Metric | AST-based

The ratio of public attributes to all public members (attributes + methods). Values near 1 indicate a data-container class; values near 0 indicate a behaviour-heavy class.

Formula

WOC = public_attributes / (public_attributes + public_methods)

Result is in [0, 1]. Returns 0 when the class has no public members.

Visibility rules

A member is public when:

It has an explicit public modifier, or
It has no accessibility modifier at all (TypeScript default is public).

Members with private, protected, # (private field), or readonly-only are excluded.

TypeScript Example

class Config {
  public host: string;        // public attr
  public port: number;        // public attr
  private secret: string;    // excluded
  getUrl(): string { ... }    // public method
}
// public_attrs=2, public_methods=1 → WOC = 2/3 ≈ 0.67

Thresholds

WOC is informational — it is not threshold-checked directly. It feeds the God Class strategy (high WMC + low TCC + high ATFD).

Related metrics

WMC · TCC · NOM · God Class strategy

← NOM TCC →