diff options
Diffstat (limited to 'preinstall.js')
-rw-r--r-- | preinstall.js | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/preinstall.js b/preinstall.js index 01db9e0..d53bca2 100644 --- a/preinstall.js +++ b/preinstall.js | |||
@@ -59,9 +59,16 @@ const readVersion = name => | |||
59 | 59 | ||
60 | const dhallVersion = readVersion("dhall"); | 60 | const dhallVersion = readVersion("dhall"); |
61 | const dhallJsonVersion = readVersion("dhall-json"); | 61 | const dhallJsonVersion = readVersion("dhall-json"); |
62 | if (semver.valid(dhallJsonVersion) && semver.lt(dhallJsonVersion, "1.2.8")) { | 62 | |
63 | const isLowerThan = (version, upperBound) => | ||
64 | semver.valid(version) && semver.lt(version, upperBound); | ||
65 | |||
66 | if (isLowerThan(dhallJsonVersion, "1.2.8")) { | ||
63 | throw new Error(`This release of the \`${pkg.name}\` npm package installs \`json-to-dhall\`, which isn’t provided by \`dhall-json@<1.2.8\`.`); | 67 | throw new Error(`This release of the \`${pkg.name}\` npm package installs \`json-to-dhall\`, which isn’t provided by \`dhall-json@<1.2.8\`.`); |
64 | } | 68 | } |
69 | if (isLowerThan(dhallJsonVersion, "1.3.0")) { | ||
70 | throw new Error(`This release of the \`${pkg.name}\` npm package installs \`yaml-to-dhall\`, which isn’t provided by \`dhall-json@<1.3.0\`.`); | ||
71 | } | ||
65 | 72 | ||
66 | const release = `https://github.com/dhall-lang/dhall-haskell/releases/download/${dhallVersion}/dhall-json-${dhallJsonVersion}`; | 73 | const release = `https://github.com/dhall-lang/dhall-haskell/releases/download/${dhallVersion}/dhall-json-${dhallJsonVersion}`; |
67 | 74 | ||