commit 8f72977ef522b7277fff8eb510cfa9d33f3643bb · kitten.sh/graphqlsp

.changeset/selfish-adults-heal.md

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       ---

     

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       '@0no-co/graphqlsp': patch

     

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       ---

     

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       Swap-write introspection file instead of overwriting it directly

+59 -24

packages/graphqlsp/src/graphql/getSchema.ts

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       import path from 'path';

     

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       import fs from 'fs';

     

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       import type { GraphQLSchema, IntrospectionQuery } from 'graphql';

     

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       import { ts } from '../ts';

     

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       import { Logger } from '../index';

     

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       async function saveTadaIntrospection(

     

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         introspection: IntrospectionQuery,

     

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         tadaOutputLocation: string,

     
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         });

     

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         let output = tadaOutputLocation;

     

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         let stat: fs.Stats | undefined;

     

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         try {

     

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           stat = await fs.promises.stat(output);

     

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         } catch (error) {

     

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           logger(`Failed to resolve path @ ${output}`);

     

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         }

     

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         if (!stat) {

     

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           try {

     

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             stat = await fs.promises.stat(path.dirname(output));

     

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             if (!stat.isDirectory()) {

     

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               logger(`Output file is not inside a directory @ ${output}`);

     

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               return;

     

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             }

     

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           } catch (error) {

     

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             logger(`Directory does not exist @ ${output}`);

     

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             return;

     

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           }

     

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         } else if (stat.isDirectory()) {

     

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           output = path.join(output, 'introspection.d.ts');

     

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         } else if (!stat.isFile()) {

     

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           logger(`No file or directory found on path @ ${output}`);

     

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           return;

     

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         }

     

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         await fs.promises.writeFile(output, contents);

     

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         logger(`Introspection saved to path @ ${output}`);

     

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       }

     

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       export interface SchemaRef {

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       import type { Stats, PathLike } from 'node:fs';

     

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       import fs from 'node:fs/promises';

     

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       import path from 'path';

     

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       import type { GraphQLSchema, IntrospectionQuery } from 'graphql';

     

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       import { ts } from '../ts';

     

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       import { Logger } from '../index';

     

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       const statFile = (

     

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         file: PathLike,

     

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         predicate: (stat: Stats) => boolean

     

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       ): Promise<boolean> => {

     

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         return fs

     

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           .stat(file)

     

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           .then(predicate)

     

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           .catch(() => false);

     

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       };

     

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       const touchFile = async (file: PathLike): Promise<void> => {

     

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         try {

     

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           const now = new Date();

     

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           await fs.utimes(file, now, now);

     

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         } catch (_error) {}

     

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       };

     

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       /** Writes a file to a swapfile then moves it into place to prevent excess change events. */

     

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       export const swapWrite = async (

     

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         target: PathLike,

     

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         contents: string

     

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       ): Promise<void> => {

     

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         if (!(await statFile(target, stat => stat.isFile()))) {

     

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           // If the file doesn't exist, we can write directly, and not

     

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           // try-catch so the error falls through

     

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           await fs.writeFile(target, contents);

     

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         } else {

     

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           // If the file exists, we write to a swap-file, then rename (i.e. move)

     

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           // the file into place. No try-catch around `writeFile` for proper

     

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           // directory/permission errors

     

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           const tempTarget = target + '.tmp';

     

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           await fs.writeFile(tempTarget, contents);

     

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           try {

     

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             await fs.rename(tempTarget, target);

     

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           } catch (error) {

     

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             await fs.unlink(tempTarget);

     

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             throw error;

     

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           } finally {

     

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             // When we move the file into place, we also update its access and

     

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             // modification time manually, in case the rename doesn't trigger

     

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             // a change event

     

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             await touchFile(target);

     

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           }

     

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         }

     

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       };

     

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       async function saveTadaIntrospection(

     

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         introspection: IntrospectionQuery,

     

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         tadaOutputLocation: string,

     
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         });

     

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         let output = tadaOutputLocation;

     

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         if (await statFile(output, stat => stat.isDirectory())) {

     

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           output = path.join(output, 'introspection.d.ts');

     

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         } else if (

     

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           !(await statFile(path.dirname(output), stat => stat.isDirectory()))

     

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         ) {

     

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           logger(`Output file is not inside a directory @ ${output}`);

     

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           return;

     

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         }

     

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         try {

     

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           await swapWrite(output, contents);

     

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           logger(`Introspection saved to path @ ${output}`);

     

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         } catch (error) {

     

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           logger(`Failed to write introspection @ ${error}`);

     

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         }

     

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       }

     

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       export interface SchemaRef {