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Add filename to combined source map if needed #6089

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Jul 23, 2021
Merged

Add filename to combined source map if needed #6089

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0d63bc4
Add sources to combined map if needed
Mar 15, 2021
fd74dcc
fix test
Mar 15, 2021
efdb82b
Update src/compiler/utils/mapped_code.ts
benmccann Jul 23, 2021
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5 changes: 5 additions & 0 deletions src/compiler/utils/mapped_code.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -251,6 +251,11 @@ export function combine_sourcemaps(

if (!map.file) delete map.file; // skip optional field `file`

// When source maps are combined and the leading map is empty, sources is not set.
// Add the filename to the empty array in this case.
// Further improvements to remapping may help address this as well https://github.com/ampproject/remapping/issues/116
if (!map.sources.length) map.sources = [filename];

return map;
}

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2 changes: 1 addition & 1 deletion test/sourcemaps/samples/decoded-sourcemap/_config.js
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Expand Up @@ -3,7 +3,7 @@ import { magic_string_preprocessor_result, magic_string_replace_all } from '../.

export default {

js_map_sources: [], // test component has no scripts
js_map_sources: ['input.svelte'],

preprocess: {
markup: ({ content, filename }) => {
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2 changes: 1 addition & 1 deletion test/sourcemaps/samples/external/_config.js
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Expand Up @@ -10,7 +10,7 @@ export const STYLES = '.awesome { color: orange; }\n';

export default {
css_map_sources: ['common.scss', 'styles.scss'],
js_map_sources: [],
js_map_sources: ['input.svelte'],
preprocess: [
{
style: () => {
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2 changes: 1 addition & 1 deletion test/sourcemaps/samples/preprocessed-no-map/_config.js
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@@ -1,5 +1,5 @@
export default {
css_map_sources: [],
css_map_sources: ['input.svelte'],
preprocess: [
{
style: ({ content }) => {
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2 changes: 1 addition & 1 deletion test/sourcemaps/samples/sourcemap-basename/_config.js
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Expand Up @@ -15,7 +15,7 @@ span {

export default {
css_map_sources: [external_relative_filename],
js_map_sources: [],
js_map_sources: ['input.svelte'],
preprocess: [
{
style: ({ content, filename }) => {
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2 changes: 1 addition & 1 deletion test/sourcemaps/samples/sourcemap-offsets/_config.js
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Expand Up @@ -3,7 +3,7 @@ import { magic_string_bundle } from '../../helpers';
export const EXTERNAL = 'span { --external-var: 1px; }';

export default {
js_map_sources: [],
js_map_sources: ['input.svelte'],
css_map_sources: ['input.svelte', 'external.css'],
preprocess: [
{
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