better type to define the interval

Use https://www.npmjs.com/package/parse-duration which supports duration
units easier for humans

autogitmerge.mjs

 #!/usr/bin/env zx
 import 'zx/globals'
+import {default as parseDuration} from 'parse-duration'
 
 const configData = await fs.readFile(argv['config'] || './config.yaml', 'utf-8')
 const config = YAML.parse(configData)
 const wd = config['working-directory'] || 'work';
-const interval = (config.interval || (15 * 60)) * 1000;
+const interval = parseDuration(config.interval || '15m', 'ms')
 
 if (!fs.existsSync(wd)) {
   echo(`Initializing ${wd}`)

config-example.yaml

@@ -10,7 +10,7 @@ project:
   url: https://lab.nexedi.com/nexedi/erp5/
   branch: zope4py2
 
-interval: 2
+interval: 10h
 
 # optional: committer for the merge commits
 committer:

config-schema.json

@@ -101,9 +101,15 @@
       }
     },
     "interval": {
-      "type": "number",
-      "description": "Interval in seconds between each fetch",
-      "default": 900
+      "type": "string",
+      "description": "Interval between each fetch",
+      "default": "15m",
+      "examples": [
+        "10m",
+        "3h",
+        "1d",
+        "1w"
+      ]
     }
   }
 }
\ No newline at end of file

package-lock.json

@@ -5,6 +5,7 @@
   "packages": {
     "": {
       "devDependencies": {
+        "parse-duration": "^1.0.2",
         "zx": "^7.0.6"
       }
     },
@@ -399,6 +400,12 @@
         "url": "https://opencollective.com/node-fetch"
       }
     },
+    "node_modules/parse-duration": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/parse-duration/-/parse-duration-1.0.2.tgz",
+      "integrity": "sha512-Dg27N6mfok+ow1a2rj/nRjtCfaKrHUZV2SJpEn/s8GaVUSlf4GGRCRP1c13Hj+wfPKVMrFDqLMLITkYKgKxyyg==",
+      "dev": true
+    },
     "node_modules/path-type": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
@@ -912,6 +919,12 @@
         "formdata-polyfill": "^4.0.10"
       }
     },
+    "parse-duration": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/parse-duration/-/parse-duration-1.0.2.tgz",
+      "integrity": "sha512-Dg27N6mfok+ow1a2rj/nRjtCfaKrHUZV2SJpEn/s8GaVUSlf4GGRCRP1c13Hj+wfPKVMrFDqLMLITkYKgKxyyg==",
+      "dev": true
+    },
     "path-type": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",

package.json

 {
   "devDependencies": {
+    "parse-duration": "^1.0.2",
     "zx": "^7.0.6"
   }
 }