fromYaml static method

SizeConfig? fromYaml(dynamic doc)

Parses the size: map of the manifest; null when the section is absent (S7 not declared).

Implementation

static SizeConfig? fromYaml(dynamic doc) {
  if (doc == null) return null;
  if (doc is! Map) {
    throw FormatException('size: must be a map {native?, web?}');
  }
  Map<String, String>? sub(String key) {
    final v = doc[key];
    if (v == null) return null;
    if (v is! Map) throw FormatException('size.$key must be a map');
    return {
      for (final e in v.entries)
        if (e.value is String) e.key: e.value,
    };
  }

  final native = sub('native');
  final web = sub('web');
  return SizeConfig(
    nativePackage: native?['package'],
    nativeEntry: native?['entry'],
    nativeArch: native?['arch'],
    // A declared `web:` map defaults `with` to the default target (like
    // native's entry): consumers with the with-target at lib/main.dart
    // only declare the baseline.
    webWith: web == null ? null : (web['with'] ?? defaultWebWith),
    webWithout: web?['without'],
  );
}