How to use the typescript-to-proptypes.inject function in typescript-to-proptypes

const { code } = await babel.transformAsync(source, { ...babelConfig, filename: tsxPath });

    if (/import \w* from 'prop-types'/.test(code)) {
      throw new Error('TypeScript demo contains prop-types, please remove them');
    }

    const propTypesAST = typescriptToProptypes.parseFromProgram(tsxPath, program, {
      shouldResolveObject: ({ name }) => {
        if (name === 'classes') {
          return false;
        }

        return undefined;
      },
    });
    const codeWithPropTypes = typescriptToProptypes.inject(propTypesAST, code);

    const prettified = prettier.format(codeWithPropTypes, { ...prettierConfig, filepath: tsxPath });
    const formatted = fixBabelGeneratorIssues(prettified);
    const correctedLineEndings = fixLineEndings(source, formatted);

    await fse.writeFile(jsPath, correctedLineEndings);
    return TranspileResult.Success;
  } catch (err) {
    console.error('Something went wrong transpiling %s\n%s\n', tsxPath, err);
    return TranspileResult.Failed;
  }
}

proptypes.body.forEach(component => {
    component.types.forEach(prop => {
      if (prop.name === 'classes' && prop.jsDoc) {
        prop.jsDoc += '\nSee [CSS API](#css) below for more details.';
      } else if (prop.name === 'children' && !prop.jsDoc) {
        prop.jsDoc = 'The content of the component.';
      } else if (!prop.jsDoc) {
        prop.jsDoc = '@ignore';
      }
    });
  });

  const jsContent = await fse.readFile(jsFile, 'utf8');

  const result = ttp.inject(proptypes, jsContent, {
    removeExistingPropTypes: true,
    comment: [
      '----------------------------- Warning --------------------------------',
      '| These PropTypes are generated from the TypeScript type definitions |',
      '|     To update them edit the d.ts file and run "yarn proptypes"     |',
      '----------------------------------------------------------------------',
    ].join('\n'),
    shouldInclude: ({ prop }) => {
      if (prop.name === 'children') {
        return true;
      }

      const documentRegExp = new RegExp(/\r?\n?@document/);
      if (prop.jsDoc && documentRegExp.test(prop.jsDoc)) {
        prop.jsDoc = prop.jsDoc.replace(documentRegExp, '');
        return true;