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fix: codeframe marker should have min width of 1

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This commit is contained in:
Evan You 2019-12-19 15:42:53 -05:00
parent d6da48a33f
commit 02c6d5c4e3
2 changed files with 5 additions and 7 deletions
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3
packages/compiler-core/src/index.ts
View File

@ -36,7 +36,6 @@ import { generateCodeFrame as _genCodeFrame } from '@vue/shared'
const generateCodeFrame = _genCodeFrame as (
source: string,
start?: number,
end?: number,
lineOffset?: number
end?: number
) => string
export { generateCodeFrame }

9
packages/shared/src/codeframe.ts
View File

@ -3,8 +3,7 @@ const range: number = 2
export function generateCodeFrame(
source: string,
start = 0,
end = source.length,
lineOffset = 0
end = source.length
): string {
const lines = source.split(/\r?\n/)
let count = 0
@ -14,20 +13,20 @@ export function generateCodeFrame(
if (count >= start) {
for (let j = i - range; j <= i + range || end > count; j++) {
if (j < 0 || j >= lines.length) continue
const line = j + 1 + lineOffset
const line = j + 1
res.push(`${line}${' '.repeat(3 - String(line).length)}| ${lines[j]}`)
const lineLength = lines[j].length
if (j === i) {
// push underline
const pad = start - (count - lineLength) + 1
const length = Math.max(
0,
1,
end > count ? lineLength - pad : end - start
)
res.push(` | ` + ' '.repeat(pad) + '^'.repeat(length))
} else if (j > i) {
if (end > count) {
const length = Math.min(end - count, lineLength)
const length = Math.max(Math.min(end - count, lineLength), 1)
res.push(` | ` + '^'.repeat(length))
}
count += lineLength + 1