awaforge

tableBase

AGPL-3.0-onlyRelease 2L4

Table BASE — Baseline Metadata (OT §6.9).

Module tableBase | Source packages/front/office/fonts/src/table/base.js | Deps fontErrors, fontReader, fontTag | Worker-safe yes

Per-script baseline metrics (latn, cyrl, hani, …). Two possible axes: horizontal and vertical. Each axis lists the baselines (romn, ideo, hang, …) and the per-script metrics.

Exports

Symbol Type Description
parseBase function (bytes) => { majorVersion, minorVersion, horizAxis?, vertAxis?, itemVarStoreOffset? }.
tableBase factory Factory.

Usage

import fw from '@awacloud/fw';
import { fw_require, modules } from '@awacloud/fonts';

for (const m of [...fw_require, ...modules]) fw.runtime.register(m);
const { parseBase } = fw.runtime.resolve('tableBase');
const base = parseBase(sfnt.tables.BASE.bytes);

Notes

  • Missing axis → undefined field (offset = 0).
  • Version 1.1 adds itemVarStoreOffset (baseline variation).

See also