fes.js/packages/fes-plugin-model/src/runtime/core.tpl

{{{userImports}}}
{{{extraImports}}}

export const models = {
{{#extraModels}}
    {{{extraModels}}},
{{/extraModels}}
{{#userModels}}
    {{{userModels}}},
{{/userModels}}
};


const cache = new Map();

export const useModel = (name) => {
    const modelFunc = models[name];
    if (modelFunc === undefined) {
        throw new Error('[plugin-model]: useModel, name is undefined.');
    }
    if (typeof modelFunc !== 'function') {
        throw new Error('[plugin-model]: useModel is not a function.');
    }
    if (!cache.has(name)) {
        cache.set(name, modelFunc());
    }
    return cache.get(name);
};