private async downloadCoursier()

in src/server/install.ts [125:163]
31 lines of code
5 McCabe index (conditional complexity)

  private async downloadCoursier(): Promise<string | undefined> {
    const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), 'coursier-'))
    const coursierPath = path.join(tempDir, 'coursier')

    let coursierUrl: string
    coursierUrl =
      os.platform() === 'darwin'
        ? os.arch() === 'arm64'
          ? COURSIER_URL_APPLE_SILICON
          : COURSIER_URL_APPLE_INTEL
        : COURSIER_URL_DEFAULT

    this.outputChannel.appendLine(`Downloading Coursier from ${coursierUrl}`)

    try {
      const response = await axios.default.get(coursierUrl, {
        responseType: 'arraybuffer',
      })

      let fileData = response.data

      // Decompress if downloading a gzipped file
      if (coursierUrl.endsWith('.gz')) {
        this.outputChannel.appendLine('Using gzipped Coursier')
        fileData = await Utils.gunzip(fileData)
      }

      await fs.writeFile(coursierPath, fileData)
      await fs.chmod(coursierPath, 0o755)
    } catch (e) {
      this.outputChannel.appendLine(`Failed to download Coursier: ${e}`)
      return undefined
    }

    this.outputChannel.appendLine(
      `Coursier temporarily installed at ${coursierPath}`
    )
    return coursierPath
  }