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asl-validator
Advanced tools
Readme
A simple Amazon States Language validator based on JSON schemas. It also validates JSON paths syntax in InputPath
, OutputPath
and ResultPath
.
When writing your state machine (for AWS step functions), you can't locally validate you state machine definition without creating it. asl-validator
makes it possible.
# Use via the CLI
npm install -g asl-validator
# Use in your code
npm install asl-validator
$ asl-validator --help
Usage: asl-validator [options]
Amazon States Language validator
Options:
-V, --version output the version number
--json-definition <jsonDefinition> JSON definition (default: [])
--json-path <jsonPath> JSON path (default: [])
--yaml-definition <yamlDefinition> YAML definition (default: [])
--yaml-path <yamlPath> YAML path (default: [])
--silent silent mode
--no-path-check skips checking path expressions
--no-arn-check skips the arn check for Resource values
-h, --help display help for command
You can validate multiple state machines at once by passing multiple --json-definition
, --json-path
, --yaml-definition
and --yaml-path
arguments.
Return status:
0
if state machine definitions are valid1
if at least one state machine definition is invalid2
if an exception occursconst aslValidator = require("asl-validator");
const definition = require("./path/to/my/state/machine/json/definition");
const { isValid, errors, errorsText } = aslValidator(definition);
if (isValid) {
console.log("✓ State machine definition is valid");
} else {
// Either go through the errors object
console.error(
"✕ State machine definition is invalid:",
errors.map(({ message }) => message).join("\n")
);
// Or display the preformatted errors text
console.error("✕ State machine definition is invalid:", errorsText("\n"));
}
npm run test
npm run lint
See LICENSE.
FAQs
Amazon States Language validator
The npm package asl-validator receives a total of 123,879 weekly downloads. As such, asl-validator popularity was classified as popular.
We found that asl-validator demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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