prisma-lint v0.5.0
prisma-lint
A linter for Prisma schema files.
Installation
> npm install --save-dev prisma-lint
# or
> yarn add --dev prisma-lint
Usage
> npx prisma-lint
# or
> yarn prisma-lint
The default schema path is prisma/schema.prisma
. If a custom schema path is specified in the field prisma.schema
within package.json
, that is used instead.
Alternatively, you can provide one or more explicit paths as CLI arguments. These can be globs, directories, or file paths.
Run yarn prisma-lint --help
for all options.
Rules
The file RULES.md contains documentation for each rule. All rules are disabled by default. Create a configuration file to enable the rules you'd like to enforce.
Configuration
The configuration file format is loosely based on eslint's conventions. Here's an example .prismalintrc.json
:
{
"rules": {
"field-name-mapping-snake-case": [
"error",
{
"compoundWords": ["S3"]
}
],
"field-order": [
"error",
{
"order": ["tenantId", "..."]
}
],
"forbid-required-ignored-field": ["error"],
"model-name-grammatical-number": [
"error",
{
"style": "singular"
}
],
"model-name-mapping-snake-case": [
"error",
{
"compoundWords": ["GraphQL"]
}
],
"require-field-index": [
"error",
{
"forAllRelations": true,
"forNames": ["tenantId"]
}
]
}
}
See Loop's configuration for a more thorough example. Configuration files are loaded with cosmiconfig.
Ignore comments
Rules can be ignored with three-slash (///
) comments inside models.
To ignore all lint rules for a model and its fields:
model User {
/// prisma-lint-ignore-model
}
To ignore specific lint rules for a model and its fields:
model User {
/// prisma-lint-ignore-model require-field
/// prisma-lint-ignore-model require-field-type
}
Some rules support parameterized ignore comments like this:
model User {
/// prisma-lint-ignore-model require-field revisionNumber,revisionCreatedAt
}
Omitting revisionNumber
and revisionCreatedAt
fields from this model will not result in a violation. Other required fields remain required.
Output
There are a few output options.
Simple (default)
> yarn prisma-lint -o simple
example/invalid.prisma ✖
Users 11:1
error Expected singular model name. model-name-grammatical-number
error Missing required fields: "createdAt". require-field
Users.emailAddress 13:3
error Field name must be mapped to snake case. field-name-mapping-snake-case
example/valid.prisma ✔
Contextual
> yarn prisma-lint -o contextual
example/invalid.prisma:11:1 Users
model Users {
^^^^^^^^^^^
error Expected singular model name. model-name-grammatical-number
error Missing required fields: "createdAt". require-field
example/invalid.prisma:13:3 Users.emailAddress
emailAddress String
^^^^^^^^^^^^
error Field name must be mapped to snake case. field-name-mapping-snake-case
Filepath
> yarn prisma-lint -o filepath
example/invalid.prisma ✖
example/valid.prisma ✔
None
> yarn prisma-lint -o none
No output, for when you just want to use the status code.
JSON
> yarn prisma-lint -o json
Outputs a serialized JSON object with list of violations. Useful for editor plugins.
Contributing
Pull requests are welcome. Please see DEVELOPMENT.md.
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