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author | Bartek IwaĆczuk <biwanczuk@gmail.com> | 2021-07-20 16:25:36 +0200 |
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committer | GitHub <noreply@github.com> | 2021-07-20 16:25:36 +0200 |
commit | d744c0c6d9a557bbaa2a23571ffb3acabf19c35a (patch) | |
tree | 6f7fb8a71b786e79c48f4b2c11a5a9ca988717e8 /docs/examples/module_metadata.md | |
parent | 9b9becf1ae256b645e37a7eecf3441f3ae4b8ea5 (diff) |
chore: move docs to separate repository
Diffstat (limited to 'docs/examples/module_metadata.md')
-rw-r--r-- | docs/examples/module_metadata.md | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/docs/examples/module_metadata.md b/docs/examples/module_metadata.md deleted file mode 100644 index c58c82648..000000000 --- a/docs/examples/module_metadata.md +++ /dev/null @@ -1,68 +0,0 @@ -# Module metadata - -## Concepts - -- [import.meta](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import.meta) - can provide information on the context of the module. -- The boolean - [import.meta.main](https://doc.deno.land/builtin/stable#ImportMeta) will let - you know if the current module is the program entry point. -- The string [import.meta.url](https://doc.deno.land/builtin/stable#ImportMeta) - will give you the URL of the current module. -- The string - [Deno.mainModule](https://doc.deno.land/builtin/stable#Deno.mainModule) will - give you the URL of the main module entry point, i.e. the module invoked by - the deno runtime. - -## Example - -The example below uses two modules to show the difference between -`import.meta.url`, `import.meta.main` and `Deno.mainModule`. In this example, -`module_a.ts` is the main module entry point: - -```ts -/** - * module_b.ts - */ -export function outputB() { - console.log("Module B's import.meta.url", import.meta.url); - console.log("Module B's mainModule url", Deno.mainModule); - console.log( - "Is module B the main module via import.meta.main?", - import.meta.main, - ); -} -``` - -```ts -/** - * module_a.ts - */ -import { outputB } from "./module_b.ts"; - -function outputA() { - console.log("Module A's import.meta.url", import.meta.url); - console.log("Module A's mainModule url", Deno.mainModule); - console.log( - "Is module A the main module via import.meta.main?", - import.meta.main, - ); -} - -outputA(); -console.log(""); -outputB(); -``` - -If `module_a.ts` is located in `/home/alice/deno` then the output of -`deno run --allow-read module_a.ts` is: - -``` -Module A's import.meta.url file:///home/alice/deno/module_a.ts -Module A's mainModule url file:///home/alice/deno/module_a.ts -Is module A the main module via import.meta.main? true - -Module B's import.meta.url file:///home/alice/deno/module_b.ts -Module B's mainModule url file:///home/alice/deno/module_a.ts -Is module B the main module via import.meta.main? false -``` |