docx-rs/docx-wasm/js/json/line_spacing.ts

export type LineSpacingJSON = {
  before?: number | null;
  after?: number | null;
  beforeLines?: number | null;
  afterLines?: number | null;
  line?: number | null;
  lineRule?: {
    type: "atLeast" | "auto" | "exact";
    val: number;
  } | null;
};