Function rewriteImportExpressions

src/javascript/transpile.ts:154–185

(
  output: Sourcemap,
  body: Node,
  resolveImport: (specifier: string) => string = String,
  resolveFile: (specifier: string) => string = String
)

}

function rewriteImportExpressions(
  output: Sourcemap,
  body: Node,
  resolveImport: (specifier: string) => string = String,
  resolveFile: (specifier: string) => string = String
): void {
  function rewriteImportSource(source: StringLiteral) {
    output.replaceLeft(source.start, source.end, JSON.stringify(resolveImport(getStringLiteralValue(source))));
  }
  simple(body, {
    ImportExpression(node) {
      const source = node.source;
      if (isStringLiteral(source)) {
        rewriteImportSource(source);
      }
    },
    CallExpression(node) {
      const source = node.arguments[0];
      if (isImportMetaResolve(node) && isStringLiteral(source)) {
        const value = getStringLiteralValue(source);
        const resolution = isPathImport(value) && !isJavaScript(value) ? resolveFile(value) : resolveImport(value);
        output.replaceLeft(
          node.start,
          node.end,
          isPathImport(resolution)
            ? `new URL(${JSON.stringify(resolution)}, location).href`
            : JSON.stringify(resolution)
        );
      }
    }
  });
}

function rewriteImportDeclarations(
  output: Sourcemap,