Merge pull request #46 from guidesmiths/zero-based-migrations

Support zero based migrations

.github/workflows/node-js-ci.yml

@@ -13,10 +13,10 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
-      - run: npm ci
-      - run: npm ci
+      - run: npm i
+      - run: npm i
         working-directory: ./examples/async
-      - run: npm ci
+      - run: npm i
         working-directory: ./examples/callback
       - run: npm run lint
       - run: npm run prettier
@@ -30,7 +30,7 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: '16.x'
-      - run: npm ci
+      - run: npm i
       - run: curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
       - run: chmod +x ./cc-test-reporter
       - run: ./cc-test-reporter before-build

.github/workflows/node-js-publish.yml

@@ -12,10 +12,10 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: '16.x'
-      - run: npm ci
-      - run: npm ci
+      - run: npm i
+      - run: npm i
         working-directory: ./examples/async
-      - run: npm ci
+      - run: npm i
         working-directory: ./examples/callback
       - run: npm run lint
       - run: npm run prettier
@@ -30,7 +30,7 @@ jobs:
         with:
           node-version: '16.x'
           registry-url: https://registry.npmjs.org/
-      - run: npm ci
+      - run: npm i
       - run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_GUIDESMITHS }}

.gitignore

@@ -3,3 +3,4 @@ coverage
 *.log
 .codeclimate
 .nyc_output
+package-lock.json

README.md

@@ -62,7 +62,7 @@ marv.scan(directory, (err, migrations) => {
 
 Migration files are just SQL scripts. Filenames must be in the form `<level><separator><comment>.<extension>` where:
 
-- level must be numeric and greater than 0
+- level must be numeric and greater or equal to 0
 - separator can be any non numeric
 - comment can contain any characters except '.'
 - extension is any file extension. See [here](https://github.com/guidesmiths/marv/#filtering-migration-files) for how to filter migration files.

lib/migrate.js

@@ -71,7 +71,7 @@ function migrate(...args) {
 
   function getWatermark(namespace, previousMigrations) {
     const migration = _.sortBy(previousMigrations, 'level').reverse()[0];
-    return migration ? migration.level : 0;
+    return migration ? migration.level : -1;
   }
 
   function getEligibleMigrations(namespace, watermark, previousMigrations, allMigrations, cb) {