pipeline.js

load.metadata = {};
// Call the locate hook.
return loader.locate(name, {
    name: load.name,
    metadata: load.metadata
}).then(address => {
    if (load.linkSets.size === 0)
        return;

    // This load still matters. Call the fetch hook.
    load.address = address;
    return loader.fetch({
        name: load.name,
        metadata: load.metadata,
        address: address
    });
}).then(source => {
    if (load.linkSets.size === 0)
        return;

    // This load still matters. Call the translate hook.
    return loader.translate({
        name: load.name,
        metadata: load.metadata,
        address: load.address,
        source: source
    });
}).then(source => {
    if (load.linkSets.size === 0)
        return;

    // This load still matters. Call the instantiate hook.
    if (callFunction(std_Set_get_size, load.linkSets) === 0)
        return;
    load.source = source;
    return loader.instantiate({
        name: load.name,
        metadata: load.metadata,
        address: load.address,
        source: source
    });
}).then(InstantiateSucceeded).catch(LoadFailed);