Regular Expressions 101

Pro

^start of string

Negative Lookahead(?!.*\.d\.tsx?$)

.*any character (except for line terminators), repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

tsthe literal text ts (case sensitive)

x?optionally matches the literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

$end of string

.*any character (except for line terminators), repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[tj]

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

jthe literal j (106₁₀ / 152₈ / 6A₁₆) (case sensitive)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

x?optionally matches the literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

$end of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

26 tokens

^(?!.*\.d\.tsx?$).*\.[tj]sx?$

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