| 22 | } |
| 23 | |
| 24 | func LoadPackageJSON(path string, logger logger) (PackageJSON, error) { |
| 25 | var p PackageJSON |
| 26 | |
| 27 | err := libbuildpack.NewJSON().Load(path, &p) |
| 28 | if err != nil && !os.IsNotExist(err) { |
| 29 | return PackageJSON{}, err |
| 30 | } |
| 31 | |
| 32 | if p.Engines.Iojs != "" { |
| 33 | return PackageJSON{}, errors.New("io.js not supported by this buildpack") |
| 34 | } |
| 35 | |
| 36 | if p.Engines.Node != "" { |
| 37 | logger.Info("engines.node (package.json): %s", p.Engines.Node) |
| 38 | } else { |
| 39 | logger.Info("engines.node (package.json): unspecified") |
| 40 | } |
| 41 | |
| 42 | if p.Engines.NPM != "" { |
| 43 | logger.Info("engines.npm (package.json): %s", p.Engines.NPM) |
| 44 | } else { |
| 45 | logger.Info("engines.npm (package.json): unspecified (use default)") |
| 46 | } |
| 47 | |
| 48 | return p, nil |
| 49 | } |