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Source-loader: Handle template strings in CSF title #8995

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merged 9 commits into from Dec 2, 2019
Merged

Source-loader: Handle template strings in CSF title #8995

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91b0d7a
handle template strings in csf title
atanasster Nov 28, 2019
178cc31
Update inject-decorator.csf.test.js.snap
shilman Nov 28, 2019
6e98d2c
make changecompatible backwards
atanasster Nov 29, 2019
4140383
Merge branch 'csf-title-template-string' of https://github.com/atanas…
atanasster Nov 29, 2019
9401302
made template title example more real-life
atanasster Nov 29, 2019
4299c34
simplify conditional
atanasster Nov 29, 2019
bcf66e3
restore snapshot file
atanasster Nov 30, 2019
d92b315
Update addon-docs.stories.js
shilman Dec 1, 2019
be3baa1
Merge branch 'next' into pr/8995
shilman Dec 2, 2019
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4 changes: 3 additions & 1 deletion examples/official-storybook/stories/addon-docs/addon-docs.stories.js
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Expand Up @@ -3,8 +3,10 @@ import notes from '../notes/notes.md';
import mdxNotes from '../notes/notes.mdx';
import { DocgenButton } from '../../components/DocgenButton';

const docsTitle = title => `Docs/${title}`;

export default {
title: 'Addons/Docs/stories',
title: `Addons/${docsTitle('stories')}`,
component: DocgenButton,
};

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59 changes: 34 additions & 25 deletions lib/source-loader/src/server/abstract-syntax-tree/traverse-helpers.js
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Expand Up @@ -96,31 +96,40 @@ export function findExportsMap(ast) {
if (!titleProperty) {
return { addsMap, idsToFrameworks };
}
const title = titleProperty.value.value;

estraverse.traverse(ast, {
fallback: 'iteration',
enter: node => {
patchNode(node);
if (
node.type === 'ExportNamedDeclaration' &&
node.declaration &&
node.declaration.declarations &&
node.declaration.declarations.length === 1 &&
node.declaration.declarations[0].type === 'VariableDeclarator' &&
node.declaration.declarations[0].id &&
node.declaration.declarations[0].id.name &&
node.declaration.declarations[0].init &&
['CallExpression', 'ArrowFunctionExpression', 'FunctionExpression'].includes(
node.declaration.declarations[0].init.type
)
) {
const storyName = storyNameFromExport(node.declaration.declarations[0].id.name);
const toAdd = handleExportedName(title, storyName, node.declaration.declarations[0].init);
Object.assign(addsMap, toAdd);
}
},
});
const titleValue = titleProperty.value;
let title;
if (titleValue.type === 'TemplateLiteral' && titleValue.quasis.length > 0) {
// if a tagged template string.
title = titleValue.quasis[0].value.raw;
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@ndelangen ndelangen Nov 29, 2019 •
edited

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I suppose the support is actually quite limited?

import mdxNotes from '../notes/notes.mdx';
import { DocgenButton } from '../../components/DocgenButton';


const stories = () => 'Stories';

export default {
  title: `Addons/Docs/${stories()}`,
  component: DocgenButton,
};

wouldn't actually work?

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works, I tried the following more real-life examples:

const docsTitle = title => `Docs/${title}`;
export default {
  title: `Addons/${docsTitle('Stories')}`,
};

or

import { DocgenButton } from '../../components/DocgenButton';
export default {
  title: `Addons/Docs/${DocgenButton.displayName}`,
};

and similar.

For other cases like expressions, dynamic functions etc - I assume there is some library that does ast node value evaluation, but I couldn't find one.

I checked in a better example and made the behavior backwards compatible for non-strings

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What about paths.macro? Can it evaluate that correctly?

import * as React from 'react'
import base from 'paths.macro'

export default {
  title: `${base}`
}

export const example = () => <div />

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The evaluation itself works fine. However there are some rules for titles - it can not finish in /.

for example we have:
import base from 'paths.macro'

that evaluates to /stories/addon-docs/

In the case those will work:

title: `Docs${base}Story`,
title: `${base}Story`,

However currently this will not work directly (ends in /):
title: `Docs${base}`

} else {
// if title is string: 'StringLiteral'
title = titleProperty.value.value;
}
if (title) {
estraverse.traverse(ast, {
fallback: 'iteration',
enter: node => {
patchNode(node);
if (
node.type === 'ExportNamedDeclaration' &&
node.declaration &&
node.declaration.declarations &&
node.declaration.declarations.length === 1 &&
node.declaration.declarations[0].type === 'VariableDeclarator' &&
node.declaration.declarations[0].id &&
node.declaration.declarations[0].id.name &&
node.declaration.declarations[0].init &&
['CallExpression', 'ArrowFunctionExpression', 'FunctionExpression'].includes(
node.declaration.declarations[0].init.type
)
) {
const storyName = storyNameFromExport(node.declaration.declarations[0].id.name);
const toAdd = handleExportedName(title, storyName, node.declaration.declarations[0].init);
Object.assign(addsMap, toAdd);
}
},
});
}
return { addsMap, idsToFrameworks };
}

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