graphile-config
Version:
Standard plugin interface and helpers to be used across the Graphile stack.
63 lines • 2.56 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.orderedApply = orderedApply;
const sort_js_1 = require("./sort.js");
// TypeScript nonsense
const isCallbackDescriptor = (v) => typeof v !== "function";
const isCallback = (v) => typeof v === "function";
function isArray(arg) {
return Array.isArray(arg);
}
function orderedApply(plugins, functionalityRetriever, applyCallback) {
// Normalize all the plugin "functionalities" and gather them into collections
const allFunctionalities = Object.create(null);
let uid = 0;
if (plugins) {
for (const plugin of plugins) {
const hooks = functionalityRetriever(plugin);
if (!hooks) {
continue;
}
const keys = Object.keys(hooks);
for (const key of keys) {
const value = hooks[key];
if (!value) {
continue;
}
const hookList = isArray(value) ? value : [value];
for (const hookSpecRaw of hookList) {
const callback = (isCallback(hookSpecRaw) ? hookSpecRaw : hookSpecRaw.callback);
const { provides, before, after } = isCallbackDescriptor(hookSpecRaw)
? hookSpecRaw
: {};
if (!allFunctionalities[key]) {
allFunctionalities[key] = [];
}
// We need to give each functionality a unique ID
const id = String(uid++);
allFunctionalities[key].push({
id,
plugin,
callback,
provides: [...(provides || []), id, plugin.name],
before: before || [],
after: after || [],
});
}
}
}
}
// Sort the collections according to provides, before and after.
for (const functionalityName in allFunctionalities) {
const functionalities = allFunctionalities[functionalityName];
if (!functionalities) {
continue;
}
const final = (0, sort_js_1.sortWithBeforeAfterProvides)(functionalities, "id");
// Finally we can register the functionalities
for (const functionality of final) {
applyCallback(functionalityName, functionality.callback, functionality.plugin);
}
}
}
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