react-native-builder-bob/lib/src/babel.js

CLI to build JavaScript files for React Native libraries

import path from 'node:path';
import { isCodegenSpec } from "./utils/isCodegenSpec.js";
import { resolveModuleSpecifier, SOURCE_EXTENSIONS, } from "./utils/resolveModuleSpecifier.js";
const isTypeImport = (node) => ('importKind' in node && node.importKind === 'type') ||
    ('exportKind' in node && node.exportKind === 'type');
const assertFilename = (filename) => {
    if (filename == null) {
        throw new Error("Couldn't find a filename for the current file.");
    }
};
export default function (api, { extension, platforms }) {
    api.assertVersion(7);
    const codegenEnabled = api.caller((caller) => caller?.codegenEnabled);
    const toExtensions = (sources) => extension == null
        ? []
        : sources.map((source) => ({ source, output: extension }));
    const rewriteExtensions = toExtensions(extension ? [...SOURCE_EXTENSIONS, extension] : SOURCE_EXTENSIONS);
    const explicitRewriteExtensions = toExtensions(['ts', 'tsx']);
    function addExtension({ node, }, state) {
        if (extension == null ||
            // Skip type imports as they'll be removed
            isTypeImport(node) ||
            // Skip non-relative imports
            !node.source?.value.startsWith('.')) {
            return;
        }
        assertFilename(state.filename);
        const filename = path.resolve(path.dirname(state.filename), node.source.value);
        // Skip imports for codegen spec if codegen is enabled
        if (codegenEnabled &&
            (isCodegenSpec(filename) ||
                SOURCE_EXTENSIONS.some((ext) => isCodegenSpec(`${filename}.${ext}`)))) {
            return;
        }
        node.source.value = resolveModuleSpecifier({
            filepath: state.filename,
            specifier: node.source.value,
            extensions: rewriteExtensions,
            explicitExtensions: explicitRewriteExtensions,
            platforms,
        });
    }
    return {
        name: 'react-native-builder-bob',
        visitor: {
            ImportDeclaration(path, state) {
                addExtension(path, state);
            },
            ExportNamedDeclaration(path, state) {
                addExtension(path, state);
            },
            ExportAllDeclaration(path, state) {
                addExtension(path, state);
            },
        },
    };
}
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