Function readLuaLibFeature

src/LuaLib.ts:178–189

(feature: LuaLibFeature, luaTarget: LuaTarget, emitHost: EmitHost)

const lualibFeatureCache = new Map<LuaTarget, Map<LuaLibFeature, string>>();

export function readLuaLibFeature(feature: LuaLibFeature, luaTarget: LuaTarget, emitHost: EmitHost): string {
    const featureMap = getOrUpdate(lualibFeatureCache, luaTarget, () => new Map());
    if (!featureMap.has(feature)) {
        const featurePath = path.join(resolveLuaLibDir(luaTarget), `${feature}.lua`);
        const luaLibFeature = emitHost.readFile(featurePath);
        if (luaLibFeature === undefined) {
            throw new Error(`Could not load lualib feature from '${featurePath}'`);
        }
        featureMap.set(feature, luaLibFeature);
    }
    return featureMap.get(feature)!;
}

export function resolveRecursiveLualibFeatures(
    features: Iterable<LuaLibFeature>,