Function build_mpljs

tools/embed_js.py:70–88

(web_backend_path, license_path)

def build_mpljs(web_backend_path, license_path):
    mpljs_path = web_backend_path / "js/mpl.js"
    mpljs_orig = mpljs_path.read_text().splitlines(keepends=True)
    try:
        mpljs_orig = mpljs_orig[:mpljs_orig.index(MPLJS_MAGIC_HEADER) + 1]
    except IndexError as err:
        raise ValueError(
            f'The mpl.js file *must* have the exact line: {MPLJS_MAGIC_HEADER}'
        ) from err

    with mpljs_path.open('w') as mpljs:
        mpljs.writelines(mpljs_orig)

        for pkg in JAVASCRIPT_PACKAGES:
            source, license = prep_package(web_backend_path, pkg)
            mpljs.writelines(gen_embedded_lines(pkg, source))

            shutil.copy(license,
                        license_path / f'LICENSE{safe_name(pkg.name)}')


if __name__ == '__main__':