@platformos/pos-cli
Version:
Manage your platformOS application
91 lines • 3.43 kB
JavaScript
import invariant from 'assert';
import { findDeprecatedUsages, parse } from 'graphql';
import { CharacterStream, onlineParser } from 'graphql-language-service-parser';
import { Range, validateWithCustomRules, Position } from 'graphql-language-service-utils';
export const SEVERITY = {
ERROR: 1,
WARNING: 2,
INFORMATION: 3,
HINT: 4,
};
export function getDiagnostics(query, schema = null, customRules, isRelayCompatMode) {
let ast = null;
try {
ast = parse(query);
}
catch (error) {
const range = getRange(error.locations[0], query);
return [
{
severity: SEVERITY.ERROR,
message: error.message,
source: 'GraphQL: Syntax',
range,
},
];
}
return validateQuery(ast, schema, customRules, isRelayCompatMode);
}
export function validateQuery(ast, schema = null, customRules, isRelayCompatMode) {
if (!schema) {
return [];
}
const validationErrorAnnotations = mapCat(validateWithCustomRules(schema, ast, customRules, isRelayCompatMode), error => annotations(error, SEVERITY.ERROR, 'Validation'));
const deprecationWarningAnnotations = !findDeprecatedUsages
? []
: mapCat(findDeprecatedUsages(schema, ast), error => annotations(error, SEVERITY.WARNING, 'Deprecation'));
return validationErrorAnnotations.concat(deprecationWarningAnnotations);
}
function mapCat(array, mapper) {
return Array.prototype.concat.apply([], array.map(mapper));
}
function annotations(error, severity, type) {
if (!error.nodes) {
return [];
}
return error.nodes.map(node => {
const highlightNode = node.kind !== 'Variable' && 'name' in node
? node.name
: 'variable' in node
? node.variable
: node;
invariant(error.locations, 'GraphQL validation error requires locations.');
const loc = error.locations[0];
const highlightLoc = getLocation(highlightNode);
const end = loc.column + (highlightLoc.end - highlightLoc.start);
return {
source: `GraphQL: ${type}`,
message: error.message,
severity,
range: new Range(new Position(loc.line - 1, loc.column - 1), new Position(loc.line - 1, end)),
};
});
}
export function getRange(location, queryText) {
const parser = onlineParser();
const state = parser.startState();
const lines = queryText.split('\n');
invariant(lines.length >= location.line, 'Query text must have more lines than where the error happened');
let stream = null;
for (let i = 0; i < location.line; i++) {
stream = new CharacterStream(lines[i]);
while (!stream.eol()) {
const style = parser.token(stream, state);
if (style === 'invalidchar') {
break;
}
}
}
invariant(stream, 'Expected Parser stream to be available.');
const line = location.line - 1;
const start = stream.getStartOfToken();
const end = stream.getCurrentPosition();
return new Range(new Position(line, start), new Position(line, end));
}
function getLocation(node) {
const typeCastedNode = node;
const location = typeCastedNode.loc;
invariant(location, 'Expected ASTNode to have a location.');
return location;
}
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