38 lines
1.2 KiB
TypeScript
38 lines
1.2 KiB
TypeScript
import {IBls} from "./interface";
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import {bls as blsHerumi} from "./herumi";
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export type Implementation = "herumi" | "blst-native";
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export * from "./interface";
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// TODO: Use a Proxy for example to throw an error if it's not initialized yet
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export const bls: IBls = {} as IBls;
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async function getImplementation(impl: Implementation = "herumi"): Promise<IBls> {
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switch (impl) {
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case "herumi":
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await blsHerumi.init();
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return blsHerumi;
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case "blst-native":
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// Lazy import native bindings to prevent automatically importing binding.node files
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if (typeof require !== "function") {
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throw Error("blst-native is only supported in NodeJS");
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}
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// eslint-disable-next-line @typescript-eslint/no-require-imports
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return require("./blst").bls;
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default:
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throw new Error(`Unsupported implementation - ${impl}`);
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}
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}
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export async function init(impl: Implementation): Promise<void> {
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// Using Object.assign instead of just bls = getImplementation()
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// because otherwise the default import breaks. The reference is lost
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// and the imported object is still undefined after calling init()
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Object.assign(bls, await getImplementation(impl));
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}
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export default bls;
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