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[DevTools] Updated source map extension format + more precise types #22073

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merged 5 commits into from
Aug 11, 2021
Merged

[DevTools] Updated source map extension format + more precise types #22073

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e67dec5
Updated source map extension format + more precise types
Aug 11, 2021
901de8b
Update code comments
Aug 11, 2021
e976243
Add missing file
Aug 11, 2021
20cccad
Minor name update
Aug 11, 2021
de72ddd
Update test fixtures + nit
Aug 11, 2021
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2 changes: 1 addition & 1 deletion packages/react-devtools-extensions/src/__tests__/updateMockSourceMaps.js
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Original file line number Diff line number Diff line change
Expand Up @@ -136,7 +136,7 @@ function compile(fileName) {
// When using the x_fb_sources extension field, the first item
// for a given source is reserved for the Function Map, and the
// Hook Map is added as the second item.
x_fb_sources: [[null, encodedHookMap]],
x_fb_sources: [[null, [encodedHookMap]]],
};
const reactSourcesExtendedSourceMap = {
...sourceMap,
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27 changes: 20 additions & 7 deletions packages/react-devtools-extensions/src/parseHookNames/parseHookNames.js
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ import {getHookSourceLocationKey} from 'react-devtools-shared/src/hookNamesCache
import {decodeHookMap} from '../generateHookMap';
import {getHookNameForLocation} from '../getHookNameForLocation';

import type {MixedSourceMap} from '../SourceMapTypes';
import type {HookMap} from '../generateHookMap';
import type {
HooksNode,
Expand All @@ -30,7 +31,7 @@ import type {SourceConsumer} from '../astUtils';
const SOURCE_MAP_REGEX = / ?sourceMappingURL=([^\s'"]+)/gm;
const MAX_SOURCE_LENGTH = 100_000_000;
const REACT_SOURCES_EXTENSION_KEY = 'x_react_sources';
const FB_SOURCES_EXTENSION_KEY = 'x_fb_sources';
const FB_SOURCES_EXTENSION_KEY = 'x_facebook_sources';

type AST = mixed;

Expand Down Expand Up @@ -662,21 +663,33 @@ function updateLruCache(
}

function extractHookMapFromSourceMap(
sourcemap,
sourcemap: MixedSourceMap,
sourceIndex: number,
): HookMap | null {
let hookMap;
if (sourcemap.hasOwnProperty(REACT_SOURCES_EXTENSION_KEY)) {
if (
sourcemap.hasOwnProperty(REACT_SOURCES_EXTENSION_KEY) &&
sourcemap[REACT_SOURCES_EXTENSION_KEY] != null
) {
// When using the x_react_sources extension field, the first item
// for a given source is reserved for the Hook Map, which is why
// we look up the index at position 0.
hookMap = sourcemap[REACT_SOURCES_EXTENSION_KEY][sourceIndex][0];
} else if (sourcemap.hasOwnProperty(FB_SOURCES_EXTENSION_KEY)) {
// When using the x_fb_sources extension field, the first item
const reactMetadataForSource =
sourcemap[REACT_SOURCES_EXTENSION_KEY][sourceIndex];
hookMap = reactMetadataForSource != null ? reactMetadataForSource[0] : null;
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Nit: I would probably unify this with the later identical line.

} else if (
sourcemap.hasOwnProperty(FB_SOURCES_EXTENSION_KEY) &&
sourcemap[FB_SOURCES_EXTENSION_KEY] != null
) {
// When using the x_facebook_sources extension field, the first item
// for a given source is reserved for the Function Map, and the
// Hook Map is added as the second item, which is why we look up
// the index at position 1.
hookMap = sourcemap[FB_SOURCES_EXTENSION_KEY][sourceIndex][1];
const fbMetadataForSource =
sourcemap[FB_SOURCES_EXTENSION_KEY][sourceIndex];
const reactMetadataForSource =
fbMetadataForSource != null ? fbMetadataForSource[1] : null;
hookMap = reactMetadataForSource != null ? reactMetadataForSource[0] : null;
}
if (hookMap != null) {
return decodeHookMap(hookMap);
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