Linear Typescript SDK
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Errors
Errors can be caught and interrogated by wrapping the operation in a try catch block:
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async function createComment(input: LinearDocument.CommentCreateInput): LinearFetch<Comment | UserError> {
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try {
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/** Try to create a comment */
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const commentPayload = await linearClient.commentCreate(input);
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/** Return it if available */
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return commentPayload.comment;
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} catch (error) {
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/** The error has been parsed by Linear Client */
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throw error;
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}
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}
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Or by catching the error thrown from a calling function:
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async function archiveFirstIssue(): LinearFetch<ArchivePayload> {
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const me = await linearClient.viewer;
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const issues = await me.assignedIssues();
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const firstIssue = issues.nodes[0];
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​
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if (firstIssue?.id) {
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const payload = await linearClient.issueArchive(firstIssue.id);
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return payload;
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} else {
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return undefined;
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}
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}
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​
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archiveFirstIssue().catch(error => {
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throw error;
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});
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The parsed error type can be compared to determine the course of action:
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import { InvalidInputLinearError, LinearError, LinearErrorType } from '@linear/sdk'
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import { UserError } from './custom-errors'
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​
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const input = { name: "Happy Team" };
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createTeam(input).catch(error => {
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if (error instanceof InvalidInputLinearError) {
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/** If the mutation has failed due to an invalid user input return a custom user error */
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return new UserError(input, error);
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} else {
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/** Otherwise throw the error and handle in the calling function */
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throw error;
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}
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});
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Information about the
request resulting in the error is attached if available: 1
run().catch(error => {
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if (error instanceof LinearError) {
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console.error("Failed query:", error.query);
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console.error("With variables:", error.variables);
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}
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throw error;
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});
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Information about the
response is attached if available: 1
run().catch(error => {
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if (error instanceof LinearError) {
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console.error("Failed HTTP status:", error.status);
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console.error("Failed response data:", error.data);
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}
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throw error;
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});
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Any GraphQL
errors are parsed and added to an array: 1
run().catch(error => {
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if (error instanceof LinearError) {
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error.errors?.map(graphqlError => {
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console.log("Error message", graphqlError.message);
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console.log("LinearErrorType of this GraphQL error", graphqlError.type);
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console.log("Error due to user input", graphqlError.userError);
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console.log("Path through the GraphQL schema", graphqlError.path);
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});
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}
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throw error;
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});
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The
raw error returned by the LinearGraphQLClient is still available:1
run().catch(error => {
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if (error instanceof LinearError) {
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console.log("The original error", error.raw);
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}
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throw error;
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});
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